Frist draft of CD pipeline

.github/workflows/cd.yml

@@ -0,0 +1,27 @@
+name: Build and publish Docker images
+
+on:
+    push:
+        paths:
+            - "*/**"
+
+jobs:
+    build-and-publish:
+        runs-on: ubuntu-latest
+        steps:
+            - name: Checkout code
+              uses: actions/checkout@v2
+            - name: Login to GitHub Container Registry
+              uses: docker/login-action@v1
+              with:
+                  registry: ghcr.io
+                  username: ${{ github.actor }}
+                  password: ${{ secrets.GITHUB_TOKEN }}
+            - name: Build and publish Docker images
+              run: |
+                  for dir in */; do
+                      if [ -n "$(git diff --name-only HEAD^ HEAD -- "$dir")" ]; then
+                      docker build -t ghcr.io/${{ github.repository_owner }}/${dir%/}:${{ github.sha }} $dir
+                      docker push ghcr.io/${{ github.repository_owner }}/${dir%/}:${{ github.sha }}
+                      fi
+                  done