Added pipeline to buid container and push to ghcr.io

.github/workflows/cd.yml

@@ -0,0 +1,43 @@
+name: Create and publish a Docker image
+
+on:
+  push:
+    tags: 
+      - '*'
+
+jobs:
+  build-and-push-image:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        
+      - name: Login to Github Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+          
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+        
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Downcase repo
+        run: |
+          echo "REPO=${GITHUB_REPOSITORY@L}" >> "${GITHUB_ENV}"
+        
+      - name: Build and push
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          push: true
+          tags: |
+            ghcr.io/${{ env.REPO }}:${{ github.ref_name }}
+            ghcr.io/${{ env.REPO }}:latest

README.md

@@ -68,6 +68,9 @@ Here is the current state of translation:
 3. Run `npm run start-container` to start the postgres and the spliit2 containers
 4. You can access the app by browsing to http://localhost:3000
 
+You could also pull it from the container registry:
+```docker pull ghcr.io/spliit-app/spliit:latest```
+
 ## Opt-in features
 
 ### Expense documents