blog: 使用 Github Action 为其他项目构建 Docker Image
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---
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---
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name: Ivan Li
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name: Ivan Li
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avatar: https://pan.ivanli.cc/api/v3/file/source/1234/头像.png?sign=xIgy54DyFRYupxjZJbK02HmpKX8C53YR-O0I18Rxm70%3D%3A0
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avatar: https://minio.ivanli.cc/ivan-public/uPic/2023/Urpetm.png
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occupation: Web Full Stack Developer
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occupation: Web Full Stack Developer
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email: master@ivanli.cc
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email: master@ivanli.cc
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github: https://github.com/IvanLi-CN
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github: https://github.com/IvanLi-CN
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282
data/blog/build-docker-image-for-other-project.md
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data/blog/build-docker-image-for-other-project.md
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---
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title: 使用 Github Action 为其他项目构建 Docker Image
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date: '2023-07-09'
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tags: ['Github Action', 'CI/CD', 'Docker']
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draft: false
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summary: 使用 Github Action,为自己喜爱的 Github 开源项目,快速、独立、自动化地构建 Docker 镜像,并推送到 ghcr (GitHub Container Registry)。
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images: ['https://minio.ivanli.cc/ivan-public/uPic/2023/DZhPx7.jpg']
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---
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## 背景
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这两天搞起了自动追番,使用了 [AutoBangumi](https://github.com/EstrellaXD/Auto_Bangumi/tree/main) 及其部署文档使用的方案组了个套件。感觉还不错,使用 Plex 播放,也让我的 iPad 终于能好好当个播放器了。
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其中就包括一个 qBittorrent 程序,自带的 Web UI 很工具化,不是很漂亮,也不是很好用。所以我就找了第三方的,正好它没有单独的 Docker image,所以我就做个自动化构建吧。
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本来想在自建的 Gitea Action 运行的,不过想了想,这个丢 Github 上跑比较合适,反正源头都在 Github 上。之前也有注意到做同样事情的库,但是一直想不起来是什么项目,就没找到……那作业没得抄,只能自己写了。
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对了,我选择的 qBittorrent Web UI 是 [VueTorrent](https://github.com/WDaan/VueTorrent)。
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## 方案
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方案很简单,将目标项目作为 Git Submodule 放在我们的构建 Repo 中。然后分为两步:
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1. 使用定时任务,每天检查最新发布的版本。将最新版本拉到项目中并提交。
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2. 使用 push 触发器,将新版本构建成 Docker image 并推送到 ghcr (GitHub Container Registry)。
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项目地址在这:[IvanLi-CN/vue-torrent-docker: Automatically build VueTorrent Docker images](https://github.com/IvanLi-CN/vue-torrent-docker)
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## 实施
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下面就是流水帐了。实施这个方案的话,我是先做第二步。因为我当时需要一个 Docker image 来替换原始方案。在文章里,为了流程顺畅,就按上帝视角,用正常的顺序来编写吧。毕竟不是教程,就不循序渐进了。
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### 定时检查上游更新
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Github Action 支持使用 Cron 来创建一个定时任务。
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所以触发 Action 的问题轻松解决。
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```yaml
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on:
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schedule:
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- cron: '0 2 * * *'
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```
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那么第二步就是获取上游最新的发布版本了。
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上游使用 “Github Releases” 发布版本:
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![Github Releases for VueTorrent](https://minio.ivanli.cc/ivan-public/uPic/2023/bHrczD.png)
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所以这里使用了 [git-get-release-action](https://github.com/marketplace/actions/git-get-release-action),获取最新的版本号和 commitish hash。
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其中版本号就是 tag name,而 commit-ish hash 就是平常使用的 commit hash 了。
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```yaml
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- name: git-get-release-action
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id: git-get-release
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uses: cardinalby/git-get-release-action@1.2.4
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env:
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GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
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with:
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repo: WDaan/VueTorrent
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latest: true
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```
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这里提供了几个参数:
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- `GITHUB_TOKEN` 是自动注入的,我们将这个变量作为环境变量提供给 git-get-release-action 就行,缺少这个变量,这个步骤会报错。
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- 我们通过 `repo` 提供了上游的仓库名称 “WDaan/VueTorrent”,这个仓库在 Github 上,所以可以直接这么简写。
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- 因为只需要获取最新的发布版本,所以提供了 `latest` 为 `true`。
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这一步骤会有两个关键的输出:
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- `tag_name` 是我们想要的最新版本的版本号,因为他的 git tag 写的就是版本号,例如现在的 `v1.6.0`。
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- `current_commitish` 就顾名思义了,接下来就是要用他作为当前 commit 的唯一标记。
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我们有了最新版本的 commit-ish 值,那就要有上次构建 Docker image 时用的 commit-ish 值。
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```yaml
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- name: Get current commitish
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id: get-current-commitish
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run: |
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cd vue-torrent
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echo "Current commitish: $(git rev-parse HEAD)"
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echo "::set-output name=current_commitish::$(git rev-parse HEAD)"
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```
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这里直接进入子模块的目录里,使用 `git rev-parse HEAD` 命令获取当前 repo 使用的上游的 commit-ish。
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因为我们每次构建镜像前,都会先更新子模块的 commit 位置,所以这里就是上次发布镜像时的 commit-ish 了。
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再因为我们一直是单调地往按时间往更新的构建,所以不需要比较 commit 的新旧,只要不一样,就是要构建新的镜像。
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所以我们这一步,就直接比较最新的 commit 和现在的 commit 是否一直:
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```yaml
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- name: Compare versions
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id: compare
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run: |
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echo "Current version: ${{ steps.git-get-release.outputs.tag_name }}"
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echo "::set-output name=should_update::${{ steps.git-get-release.outputs.target_commitish != steps.get-current-commitish.outputs.current_commitish }}"
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```
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下面就是重要的三个步骤了,一更新子模块,二提交更新,三打标签。
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#### 更新子模块
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```yaml
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- name: Update
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if: steps.compare.outputs.should_update == 'true'
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working-directory: ./vue-torrent
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run: |
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git fetch --depth=1 origin ${{ steps.git-get-release.outputs.tag_name }}
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git checkout -b ${{ steps.git-get-release.outputs.tag_name }} ${{ steps.git-get-release.outputs.target_commitish }}
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git reset --hard HEAD
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```
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_这里使用了 `working-directory` 更改执行目录到子模块中,用 `cd` 进去应该也一样。_
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因为之前检出存储库时是只检出最新的那个 commit,所以需使用 `git fetch` 将我们需要的那个 commit 拉到运行环境中,否则会报形如 `fatal: Could not parse object '6ab00a179b9509ef162a14862fb828c78144caff'.` 的错误。
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之后使用 `git checkout -b` 将目标的 commit 拉到新的分支上。
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最后,将当前的位置设到 HEAD,即目标 commit。
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后两步应该是可以直接改成 `git reset --hard ${{ steps.git-get-release.outputs.target_commitish }}`,不过我没试过,仅供参考。
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#### 提交更新
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```yaml
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- name: Commit changes
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if: steps.compare.outputs.should_update == 'true'
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run: |
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git diff
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git config user.name "GitHub Actions"
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git config user.email "bot@noreply.github.com"
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git add .
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git commit -m "Update to ${{ steps.git-get-release.outputs.tag_name }}"
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git push origin ${{ github.ref_name }}
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```
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这就没什么好说的了,需要注意的一点就是权限问题。因为我们是 push 到当前的 repo 上,所以可以直接使用自动注入的 `GITHUB_TOKEN`,不过需要在 repo 的设置页面更改下权限:
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![Github Action Permissions Setting](https://minio.ivanli.cc/ivan-public/uPic/2023/QPvf6R.png)
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选择 “Read and write permissions",这样就能写入当前的 repo。
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#### 打标签
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```yaml
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- name: Tag
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if: steps.compare.outputs.should_update == 'true'
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run: |
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git tag ${{ steps.git-get-release.outputs.tag_name }}
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git push origin ${{ steps.git-get-release.outputs.tag_name }}
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```
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目的就是后面构建镜像时,能方便地从这里取到版本号。
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### 构建镜像
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这个就比较简单了,代码在这:
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[Action](https://github.com/IvanLi-CN/vue-torrent-docker/blob/7439b89cb87bb4627d87f0445e8c1fc39ed89f78/.github/workflows/auto-build.yaml)
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[Dockerfile](https://github.com/IvanLi-CN/vue-torrent-docker/blob/7439b89cb87bb4627d87f0445e8c1fc39ed89f78/.github/workflows/auto-build.yaml)
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因为直接做成子模块了,流程就简单很多了,只要检出代码时将子模块一并检出,之后直接构建 Docker 镜像就行。
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我也不知道有没有人用,只构建了 x86 的自用。
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## 最后
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分享一下我现在用的追番的 Docker Compose 吧:
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`docker-compose.yaml`
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```yaml
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version: '3.2'
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services:
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caddy:
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container_name: caddy
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ports:
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- ${QB_PORT}:80
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networks:
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- auto_bangumi
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restart: unless-stopped
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volumes:
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- ./caddy:/etc/caddy
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image: caddy:2
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vuetorrent:
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container_name: vuetorrent
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expose:
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- 3000
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networks:
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- auto_bangumi
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restart: unless-stopped
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image: ghcr.io/ivanli-cn/vue-torrent:main
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qbittorrent:
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container_name: qBittorrent
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environment:
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- TZ=Asia/Shanghai
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- TemPath=/downloads
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- SavePath=/downloads
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- PGID=${GID}
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- PUID=${UID}
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- WEBUI_PORT=8080
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volumes:
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- qb_config:/config
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- ${DOWNLOAD_PATH}:/downloads
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ports:
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- 6881:6881
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- 6881:6881/udp
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networks:
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- auto_bangumi
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restart: unless-stopped
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image: superng6/qbittorrent:latest
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auto_bangumi:
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container_name: AutoBangumi
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environment:
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- TZ=Asia/Shanghai
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- PGID=${GID}
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- PUID=${UID}
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- AB_DOWNLOADER_HOST=qbittorrent:${QB_PORT}
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networks:
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- auto_bangumi
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volumes:
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- ./auto_bangumi/config:/app/config
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- ./auto_bangumi/data:/app/data
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ports:
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- 7892:7892
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dns:
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- 8.8.8.8
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- 223.5.5.5
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restart: unless-stopped
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image: estrellaxd/auto_bangumi:latest
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depends_on:
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- qbittorrent
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plex:
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container_name: Plex
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environment:
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- TZ=Asia/Shanghai
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- PUID=${UID}
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- PGID=${GID}
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- VERSION=docker
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- PLEX_CLAIM=${PLEX_CLAIM}
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networks:
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- auto_bangumi
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ports:
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- 32400:32400
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volumes:
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- plex_config:/config
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- ${DOWNLOAD_PATH}/Bangumi:/tv
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restart: unless-stopped
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image: lscr.io/linuxserver/plex:latest
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networks:
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auto_bangumi:
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volumes:
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qb_config:
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external: false
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plex_config:
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external: false
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```
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`caddy/Caddyfile`
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```Caddyfile
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:80 {
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reverse_proxy /api/* qbittorrent:8080
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reverse_proxy /* vuetorrent:3000
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}
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```
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`.env`
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```bash
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QB_PORT=8080
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DOWNLOAD_PATH=/home/ivan/downloads
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UID=1000
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GID=1000
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PLEX_CLAIM=claim-DwbcewEB7j3pmNotG_eT
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```
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@ -8,10 +8,8 @@ const siteMetadata = {
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theme: 'system', // system, dark or light
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theme: 'system', // system, dark or light
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siteUrl: 'https://ivanli.cc/',
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siteUrl: 'https://ivanli.cc/',
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siteRepo: 'https://git.ivanli.cc/ivan/tailwind-nextjs-blog',
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siteRepo: 'https://git.ivanli.cc/ivan/tailwind-nextjs-blog',
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siteLogo:
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siteLogo: 'https://minio.ivanli.cc/ivan-public/uPic/2023/Urpetm.png',
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'https://pan.ivanli.cc/api/v3/file/source/1234/%E5%A4%B4%E5%83%8F.png?sign=xIgy54DyFRYupxjZJbK02HmpKX8C53YR-O0I18Rxm70%3D%3A0',
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image: 'https://minio.ivanli.cc/ivan-public/uPic/2023/Urpetm.png',
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image:
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'https://pan.ivanli.cc/api/v3/file/source/1234/%E5%A4%B4%E5%83%8F.png?sign=xIgy54DyFRYupxjZJbK02HmpKX8C53YR-O0I18Rxm70%3D%3A0',
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socialBanner: '/static/images/twitter-card.png',
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socialBanner: '/static/images/twitter-card.png',
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email: 'master@ivanli.cc',
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email: 'master@ivanli.cc',
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github: 'https://github.com/IvanLi-CN',
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github: 'https://github.com/IvanLi-CN',
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@ -86,6 +84,6 @@ const siteMetadata = {
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url: process.env.NEXT_PUBLIC_COMMENTO_URL,
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url: process.env.NEXT_PUBLIC_COMMENTO_URL,
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},
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},
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},
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},
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}
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};
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module.exports = siteMetadata
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module.exports = siteMetadata;
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