Automate pushing dockerbuild image to ghcr.io (#598)

.github/workflows/dockerbuild.yaml

@@ -0,0 +1,43 @@
+name: Dockerbuild
+on:
+    workflow_dispatch: {}
+    push:
+        branches: [master, develop]
+        paths:
+            - "dockerbuild/**"
+concurrency: ${{ github.workflow }}-${{ github.ref_name }}
+env:
+    REGISTRY: ghcr.io
+    IMAGE_NAME: ${{ github.repository }}-dockerbuild
+jobs:
+    build:
+        name: Docker Build
+        runs-on: ubuntu-latest
+        permissions:
+            contents: read
+            packages: write
+        steps:
+            - uses: actions/checkout@v3
+
+            - name: Log in to the Container registry
+              uses: docker/login-action@f054a8b539a109f9f41c372932f1ae047eff08c9
+              with:
+                  registry: ${{ env.REGISTRY }}
+                  username: ${{ github.actor }}
+                  password: ${{ secrets.GITHUB_TOKEN }}
+
+            - name: Extract metadata for Docker
+              id: meta
+              uses: docker/metadata-action@98669ae865ea3cffbcbaa878cf57c20bbf1c6c38
+              with:
+                  images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+                  tags: |
+                      type=ref,event=branch
+
+            - name: Build and push Docker image
+              uses: docker/build-push-action@ad44023a93711e3deb337508980b4b5e9bcdc5dc
+              with:
+                  context: dockerbuild
+                  push: true
+                  tags: ${{ steps.meta.outputs.tags }}
+                  labels: ${{ steps.meta.outputs.labels }}