如何配置Docker Hub中Test/main触发Test/depend的自动构建？

Can you trigger Test/depend builds when Test/main changes? #

Absolutely, you can set this up! The easiest way to link these two Docker Hub repositories is by combining Docker Hub Build Triggers with a GitHub Action in your Test/main repository. Here's a step-by-step breakdown:

1. Create a Build Trigger for Test/depend in Docker Hub #

First, we'll set up a trigger URL that can be called to kick off builds for Test/depend:

• Log into Docker Hub and navigate to your Test/depend repository.
• Go to the Builds tab, then find the Build Triggers section (enable automated builds first if you haven’t already).
• Click Create Trigger, give it a descriptive name like "Trigger from Test/main pushes", and save it.
• Copy the generated trigger URL (it’ll look something like https://hub.docker.com/api/build/v1/source/abc123/trigger/xyz789/call/) — keep this URL secure, since anyone with it can trigger builds for your repo.

2. Add the Trigger URL as a GitHub Secret in Test/main #

To avoid hardcoding sensitive data in your workflow, store the trigger URL as a GitHub Secret:

• Go to your Test/main GitHub repository, navigate to Settings > Secrets and variables > Actions.
• Click New repository secret, name it DOCKER_HUB_TRIGGER_URL, and paste the trigger URL you copied earlier. Save it.

3. Create a GitHub Action to Trigger the Build #

Now, set up a workflow that runs whenever code is pushed to Test/main:

• In your Test/main repo, create a new file at .github/workflows/trigger-depend-build.yml.
• Paste the following YAML content into the file:

  name: Trigger Test/depend Docker Build
  on:
    push:
      branches: [ main ] # Trigger only when code is pushed to the main branch
  jobs:
    trigger-build:
      runs-on: ubuntu-latest
      steps:
        - name: Send build trigger request to Docker Hub
          run: |
            curl -X POST "${{ secrets.DOCKER_HUB_TRIGGER_URL }}"
  

• Commit and push this file to your main branch.

How it works #

From now on, every time you push code to the main branch of Test/main:

1. The GitHub Action runs automatically.
2. It sends a POST request to the Docker Hub trigger URL stored in your secret.
3. Docker Hub receives the request and starts a new build for Test/depend, using its configured build settings (like the linked repo, Dockerfile path, etc.).

Optional: Customize the Trigger #

If you need to specify a particular tag, Dockerfile path, or branch for the Test/depend build, you can add query parameters to the trigger URL. For example:

https://hub.docker.com/api/build/v1/source/abc123/trigger/xyz789/call/?tag=v1.0&dockerfile=Dockerfile.prod&branch=main

内容的提问来源于stack exchange，提问作者Surafel