build(misc): build docker images on demand (#53)

* Add a workflow to build snapshot docker images

* Snapshot release only on default branch

* build docker images

* format

.github/workflows/build-docker-images.yaml

@@ -0,0 +1,66 @@
+---
+name: Build docker images
+on:
+  workflow_dispatch:
+
+jobs:
+  container_build:
+    name: Build docker images and publish to Docker Hub
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out the repo
+        uses: actions/checkout@v4
+
+      - name: Get the current version
+        id: vars
+        run: |
+          git log -n 5
+
+          COMMIT_HASH_SHORT=$(git rev-parse --short HEAD)
+          echo $COMMIT_HASH_SHORT
+
+          CURRENT_VERSION=$(./mvnw org.apache.maven.plugins:maven-help-plugin:3.2.0:evaluate -Dexpression=project.version -q -DforceStdout)
+          echo $CURRENT_VERSION
+          
+          DOCKER_IMAGE_TAG=$CURRENT_VERSION-$COMMIT_HASH_SHORT
+          echo "docker-image-tag=$DOCKER_IMAGE_TAG" >> $GITHUB_OUTPUT
+
+
+      - name: Log in to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+
+      - name: Build kraken-app-controller container
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          file: ./docker/app-controller/Dockerfile
+          push: true
+          tags: cloudnexusopsdockerhub/kraken-app-controller:${{ steps.vars.outputs.docker-image-tag }}
+
+      - name: Build kraken-app-hub container
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          file: ./docker/app-hub/Dockerfile
+          push: true
+          tags: cloudnexusopsdockerhub/kraken-app-hub:${{ steps.vars.outputs.docker-image-tag }}
+
+
+      - name: Build kraken-app-agent container
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          file: ./docker/app-agent/Dockerfile
+          push: true
+          tags: cloudnexusopsdockerhub/kraken-app-agent:${{ steps.vars.outputs.docker-image-tag }}
+
+      - name: Build kraken-app-portal container
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          file: ./docker/app-portal/Dockerfile
+          push: true
+          tags: cloudnexusopsdockerhub/kraken-app-portal:${{ steps.vars.outputs.docker-image-tag }}