Added GitHub Workflow

.github/workflows/ci-main.yml

@@ -0,0 +1,101 @@
+name: Flow Main
+
+on:
+  push:
+    branches:
+      - main
+    tags:
+      - v*
+
+  # Create a button to trigger the workflow manually.
+  workflow_dispatch:
+
+env:
+  IMAGE_NAME: app
+
+jobs:
+  bump-version:
+    runs-on: ubuntu-latest
+    outputs:
+      VERSION: ${{ steps.version.outputs.VERSION }}
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Set version
+        id: version
+        run: |
+          # Strip git ref prefix from version
+          VERSION=$(echo "${{ github.ref }}" | sed -e 's,.*/\(.*\),\1,')
+
+          # Strip "v" prefix from tag name
+          [[ "${{ github.ref }}" == "refs/tags/"* ]] && VERSION=$(echo $VERSION | sed -e 's/^v//')
+
+          echo "VERSION=$VERSION" >> "$GITHUB_OUTPUT"
+
+          # Use Version `edge` tag convention
+          if [ "$VERSION" == "main" ] || [ "$VERSION" == "merge" ]; then
+            VERSION=edge
+          fi
+
+          # Update version in project
+          BUILD_TIMESTAMP=$(TZ=UTC date '+%Y-%m-%d %H:%M:%S %Z')
+          echo "{\"version\": \"$VERSION\", \"build\": \"$BUILD_TIMESTAMP\"}" > storage/version.json
+
+      - name: Upload version.json
+        uses: actions/upload-artifact@v2
+        with:
+          name: version-json
+          path: storage
+
+  docker-ci:
+    runs-on: ubuntu-latest
+    needs: [bump-version]
+    outputs:
+      IMAGE_TAG: ${{ steps.docker_push.outputs.IMAGE_TAG }}
+    steps:
+      - name: Download artifact version.json
+        uses: actions/download-artifact@v2
+        with:
+          name: version-json
+          path: storage
+
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Build Docker image
+        run: docker build . --file .docker/Dockerfile --tag $IMAGE_NAME
+
+      - name: Login into registry
+        run: echo "${{ secrets.GITHUB_TOKEN }}" | docker login docker.pkg.github.com -u ${{ github.actor }} --password-stdin
+
+      - name: Push Docker image
+        id: docker_push
+        env:
+          VERSION: ${{ needs.bump-version.outputs.VERSION }}
+        run: |
+          IMAGE_ID=docker.pkg.github.com/${{ github.repository }}/$IMAGE_NAME
+
+          # Use Docker `latest` tag convention
+          if [ "$VERSION" == "main" ] || [ "$VERSION" == "merge" ] || [ "$VERSION" == "edge" ]; then
+            VERSION="latest"
+          fi
+
+          # Change all uppercase to lowercase
+          IMAGE_ID=$(echo $IMAGE_ID | tr '[A-Z]' '[a-z]')
+
+          docker tag $IMAGE_NAME $IMAGE_ID:$VERSION
+          docker push $IMAGE_ID:$VERSION
+
+          echo "IMAGE_TAG=$VERSION" >> $GITHUB_OUTPUT
+
+  deploy:
+    runs-on: ubuntu-latest
+    needs: [docker-ci]
+    steps:
+      - name: Deploy on K8s
+        id: deploy
+        run: |
+          COMMIT_NUMBER=$(git rev-parse --short ${{ github.sha }})
+          echo "Work in progress."
+          echo "For now, settle for the last commit's ID: $COMMIT_NUMBER"