Add Gitea Actions CI/CD workflow and update README with setup instructions

.gitea/workflows/build-and-push.yml

@@ -0,0 +1,50 @@
+name: Build and Push Docker Image
+
+on:
+  push:
+    branches:
+      - main
+      - master
+  pull_request:
+    branches:
+      - main
+      - master
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to Gitea Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: gitea.purpleraft.com
+          username: ${{ gitea.actor }}
+          password: ${{ secrets.REGISTRY_TOKEN }}
+
+      - name: Extract metadata
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: gitea.purpleraft.com/${{ gitea.repository }}
+          tags: |
+            type=ref,event=branch
+            type=ref,event=pr
+            type=raw,value=latest,enable={{is_default_branch}}
+            type=sha,prefix={{branch}}-
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          file: ./Dockerfile
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max

README.md

@@ -30,6 +30,35 @@ Please be aware that this will not persist any data.
 | `POSTGRESQL_PASSWORD` 	    |  		        | -                                         |
 
 
+## Gitea Actions CI/CD
+
+This repository includes a Gitea Actions workflow that automatically builds and pushes the Docker image to your Gitea container registry.
+
+### Setup Instructions
+
+1. **Create a Personal Access Token:**
+   - Go to your Gitea instance: https://gitea.purpleraft.com/
+   - Navigate to Settings → Applications → Generate New Token
+   - Create a token with `write:packages` permission
+   - Copy the token value
+
+2. **Add Repository Secret:**
+   - Go to your repository settings
+   - Navigate to Secrets and Variables → Actions
+   - Add a new secret named `GITEA_TOKEN` with your personal access token as the value
+
+3. **Enable Actions (if not already enabled):**
+   - Ensure Gitea Actions are enabled in your repository settings
+   - The workflow will trigger on pushes to main/master branches and pull requests
+
+### Workflow Features
+
+- Builds Docker image using Docker Buildx
+- Pushes to `gitea.purpleraft.com/{username}/{repository}`
+- Creates multiple tags: branch name, latest (for default branch), and commit SHA
+- Uses GitHub Actions cache for faster builds
+- Runs on pushes and pull requests
+
 ## To Do
 - Figure out where the pictures are stored
 - Write some setup instructions