Updating build workflow with enhancements (#131)

* adding edge docker image tag for image based on main branch

* adding GHCR to container repos

* updating build apiVersion during build

* only doing build when certain paths are changed

.github/workflows/build.yml

@@ -8,6 +8,11 @@ on:
       - "bug-*"
     tags:
       - "v*"
+    paths:
+      - "src/**"
+      - "Dockerfile"
+      - "go.mod"
+      - "go.sum"
 
 jobs:
   build:
@@ -20,7 +25,13 @@ jobs:
         id: docker_meta
         uses: docker/metadata-action@v3.6.2
         with:
-          images: tobiasehlert/teslamateapi
+          images: |
+            tobiasehlert/teslamateapi
+            ghcr.io/tobiasehlert/teslamateapi
+          tags: |
+            type=edge
+            type=semver,pattern=v{{version}}
+            type=semver,pattern=v{{major}}.{{minor}}
 
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v1.2.0
@@ -43,6 +54,23 @@ jobs:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
 
+      - name: Login to GitHub Container Registry
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@v1.12.0
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Configure build information
+        id: build_information
+        run: |
+          if  [[ ${{ github.ref_type }} == "tag" ]]; then
+            echo "::set-output name=release_name::$( echo ${{ github.ref_name }} )"
+          else
+            echo "::set-output name=release_name::$( echo unknown )"
+          fi
+
       - name: Build and push
         uses: docker/build-push-action@v2.7.0
         with:
@@ -55,4 +83,4 @@ jobs:
           cache-from: type=local,src=/tmp/.buildx-cache
           cache-to: type=local,dest=/tmp/.buildx-cache
           build-args: |
-            apiVersion=${{ github.event.release.tag_name }}
+            apiVersion=${{ steps.build_information.outputs.release_name }}