create github action to build docker image

.github/workflows/build.yml

@@ -0,0 +1,30 @@
+name: Build Docker Container
+
+on:
+    push:
+        branches:
+            - main
+            - staging
+
+jobs:
+    docker:
+        runs-on: ubuntu-latest
+        steps:
+            -
+                name: Set up QEMU
+                uses: docker/setup-qemu-action@v2
+            -
+                name: Set up Docker Buildx
+                uses: docker/setup-buildx-action@v2
+            -
+                name: Login to Docker Hub
+                uses: docker/login-action@v2
+                with:
+                    username: ${{ secrets.DOCKERHUB_USERNAME }}
+                    password: ${{ secrets.DOCKERHUB_TOKEN }}
+            -
+                name: Build and push
+                uses: docker/build-push-action@v4
+                with:
+                    push: true
+                    tags: devkba/cake2-app-template:${{ GITHUB_REF_NAME }}