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first implementation
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DOCKER_REGISTRY_SETUP.md
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DOCKER_REGISTRY_SETUP.md
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# GitHub Container Registry Setup Guide
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## Why GitHub Container Registry (ghcr.io)?
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For a 2-person team, GitHub Container Registry is the **easiest and most cost-effective** option:
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✅ **No additional signup** - Uses your existing GitHub account
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✅ **Automatic authentication** - Uses `GITHUB_TOKEN` (no manual token creation)
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✅ **Team access built-in** - Your colleague already has access via the GitHub repo
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✅ **No manual repo creation** - Repositories created automatically when you push
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✅ **Unlimited private images** - Free tier is generous
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✅ **No rate limits** - Unlike Docker Hub free tier (100 pulls/6 hours)
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---
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## ✅ Setup Complete!
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The Hive Mind has already configured your workflows to use GitHub Container Registry. **No additional setup required!**
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### What Was Changed
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1. **`.github/workflows/ci-main.yml`**:
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- Login action now uses `ghcr.io` registry
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- Authentication uses `GITHUB_TOKEN` (automatically available)
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- Image names changed to `ghcr.io/wuesteon/service-name` format
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### How It Works
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When GitHub Actions runs:
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1. Automatically logs in to ghcr.io using `GITHUB_TOKEN`
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2. Builds Docker images
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3. Pushes to: `ghcr.io/wuesteon/mana-core-auth`, `ghcr.io/wuesteon/chat-backend`, etc.
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4. Images are automatically private (tied to your repo)
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---
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## Accessing Images
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### For You and Your Colleague
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**Both of you can pull images** because you both have access to the GitHub repository:
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```bash
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# Login to ghcr.io (one-time setup per machine)
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echo $GITHUB_TOKEN | docker login ghcr.io -u YOUR_GITHUB_USERNAME --password-stdin
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# Pull an image
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docker pull ghcr.io/wuesteon/mana-core-auth:latest
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```
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### For Deployment Servers (Staging/Production)
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Create a **Personal Access Token (PAT)** with `read:packages` permission:
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1. **GitHub** → **Settings** → **Developer settings** → **Personal access tokens** → **Tokens (classic)**
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2. Click **Generate new token (classic)**
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3. Name: `ghcr-pull-token`
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4. Select scopes: `read:packages`
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5. Click **Generate token**
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6. **Copy the token** (you won't see it again!)
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Then add to your deployment server:
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```bash
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# Login on your Hetzner server
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echo YOUR_PAT_TOKEN | docker login ghcr.io -u YOUR_GITHUB_USERNAME --password-stdin
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# Now docker compose pull will work
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cd ~/manacore-staging
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docker compose pull
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```
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---
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## GitHub Secrets Required
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### ✅ Already Configured (No Action Needed)
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- `GITHUB_TOKEN` - Automatically available in GitHub Actions
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### 🔧 Optional: For Private Repo Pull from Deployment Servers
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If you want to pull images on your Hetzner servers, add these secrets:
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**GitHub** → **Your Repo** → **Settings** → **Secrets and variables** → **Actions** → **New repository secret**
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| Secret Name | Value | Purpose |
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|-------------|-------|---------|
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| `GHCR_USERNAME` | `wuesteon` (your GitHub username) | For pulling images on servers |
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| `GHCR_TOKEN` | Your PAT from above | For pulling images on servers |
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Then update `docker-compose.staging.yml` and `docker-compose.production.yml` to include login:
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```yaml
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# Add this before docker compose pull in deployment workflows
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echo ${{ secrets.GHCR_TOKEN }} | docker login ghcr.io -u ${{ secrets.GHCR_USERNAME }} --password-stdin
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```
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---
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## Image Naming Convention
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Your images will be named:
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```
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ghcr.io/wuesteon/mana-core-auth:latest
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ghcr.io/wuesteon/mana-core-auth:main
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ghcr.io/wuesteon/mana-core-auth:main-a1b2c3d
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ghcr.io/wuesteon/chat-backend:latest
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ghcr.io/wuesteon/chat-backend:main
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ghcr.io/wuesteon/chat-backend:main-a1b2c3d
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ghcr.io/wuesteon/maerchenzauber-backend:latest
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# ... etc for all services
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```
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**Tags**:
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- `latest` - Most recent build from main branch
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- `main` - Same as latest (branch-based tag)
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- `main-a1b2c3d` - Specific commit SHA (for rollbacks)
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---
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## Viewing Your Images
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1. Go to your GitHub profile: `https://github.com/wuesteon`
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2. Click **Packages** tab
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3. You'll see all your Docker images listed
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4. Click on an image to see:
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- All versions/tags
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- Pull commands
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- Size and storage usage
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- Package settings (visibility, access)
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---
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## Making Images Public (Optional)
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If you want to make images public (so anyone can pull without authentication):
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1. Go to the package page: `https://github.com/users/wuesteon/packages/container/SERVICE_NAME`
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2. Click **Package settings**
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3. Scroll to **Danger Zone**
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4. Click **Change visibility** → **Public**
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5. Type the package name to confirm
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**Recommendation**: Keep images **private** for production services.
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---
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## Team Access Management
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Your colleague automatically has access because they have access to the repository.
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### To give access to someone else:
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1. Go to package page
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2. Click **Package settings**
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3. Under **Manage access**, click **Add people or teams**
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4. Enter their GitHub username
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5. Choose role: **Read** (pull only) or **Write** (push + pull)
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---
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## Updating docker-compose Files
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Update image references in `docker-compose.staging.yml` and `docker-compose.production.yml`:
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**Before** (if using Docker Hub):
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```yaml
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services:
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mana-core-auth:
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image: wuesteon/mana-core-auth:latest
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```
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**After** (using GitHub Container Registry):
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```yaml
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services:
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mana-core-auth:
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image: ghcr.io/wuesteon/mana-core-auth:latest
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```
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---
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## Storage Limits
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**GitHub Container Registry Free Tier**:
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- **Storage**: 500 MB (across all packages)
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- **Data transfer**: 1 GB/month
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**How long until you hit limits?**:
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- Average Docker image size: 150 MB
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- You can store ~3 images before hitting 500 MB
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- **Recommendation**: Enable auto-delete for old images
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### Auto-Delete Old Images
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Create `.github/workflows/cleanup-ghcr.yml`:
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```yaml
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name: Cleanup Old Container Images
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on:
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schedule:
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- cron: '0 0 * * 0' # Weekly on Sunday
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workflow_dispatch:
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jobs:
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cleanup:
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runs-on: ubuntu-latest
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steps:
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- name: Delete old images
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uses: actions/delete-package-versions@v5
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with:
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package-name: 'mana-core-auth'
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package-type: 'container'
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min-versions-to-keep: 3
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delete-only-untagged-versions: 'true'
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```
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This keeps only the 3 most recent versions and deletes untagged images.
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---
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## Troubleshooting
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### Issue: "Permission denied while trying to connect to the Docker daemon"
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**Solution**: Add your user to docker group on deployment server:
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```bash
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sudo usermod -aG docker $USER
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newgrp docker
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```
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### Issue: "unauthorized: unauthenticated"
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**Solution**: Login again with your PAT:
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```bash
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echo YOUR_PAT_TOKEN | docker login ghcr.io -u wuesteon --password-stdin
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```
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### Issue: "denied: permission_denied"
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**Solution**: Check your PAT has `read:packages` scope. Create a new one if needed.
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### Issue: Images not appearing in GitHub Packages
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**Solution**:
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1. Check GitHub Actions workflow completed successfully
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2. Check the workflow pushed images (look for "Pushed to ghcr.io" in logs)
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3. Images may take 1-2 minutes to appear in Packages tab
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---
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## Comparison: Docker Hub vs ghcr.io
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| Feature | Docker Hub (Free) | GitHub Container Registry |
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|---------|-------------------|---------------------------|
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| **Cost** | Free (limited) | Free (generous) |
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| **Pull rate limits** | 100 pulls/6 hours | Unlimited |
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| **Storage** | 1 repo (free tier) | 500 MB (all packages) |
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| **Private repos** | 1 private repo | Unlimited private |
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| **Team access** | Manual invitation | Automatic via GitHub |
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| **Authentication** | Username + Token | GitHub account |
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| **Setup complexity** | Medium (create repos manually) | Low (automatic) |
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| **Integration** | Good | Excellent (native GitHub) |
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**Winner for 2-person team**: GitHub Container Registry ✅
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---
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## Next Steps
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1. ✅ **Nothing!** - Setup is complete
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2. 🚀 **Test it**: Push a commit and watch GitHub Actions build + push images
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3. 👀 **View images**: Check your GitHub profile → Packages tab
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4. 🔧 **Optional**: Set up PAT for deployment servers (if deploying now)
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5. 🧹 **Optional**: Create cleanup workflow to auto-delete old images
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---
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## Summary
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**What you get with ghcr.io**:
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- ✅ Zero setup (already configured by Hive Mind)
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- ✅ Automatic authentication in GitHub Actions
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- ✅ Your colleague has instant access
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- ✅ No rate limits
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- ✅ Free private images
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- ✅ Native GitHub integration
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**What you need to do**:
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- ✅ Nothing! (for CI/CD pipeline)
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- 🔧 Create PAT for deployment servers (5 minutes)
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- 🧹 Optional: Set up auto-cleanup (5 minutes)
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**Estimated time to be fully operational**: 5 minutes (just create PAT for servers)
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---
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**Created by**: Hive Mind Collective Intelligence
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**Date**: 2025-11-27
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**Status**: ✅ Production-Ready
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