PR for #320 tag image latest if GitHub ref is master (#359)

* #320 first version Docker Build Push GH Action

* #320 2nd version Docker Build Push GH Action

* #320 2ndversion Docker Build Push GH Action textedit

* #320 use v2 Docker Build Push GH Action

* #320 use v2 Docker Build Push GH Action remove comments

* #320 use v2 Docker Build Push GH Action fix yaml error

* #320 use v2 Docker Build Push GH Action badge

* #320 use v2 Docker Build Push GH Run GHC Unit Tests in Docker

* #320 use v2 Docker Build Push try load Docker Image in build env

* #320 use v2 Docker Build Push - finalize

* #320 use v2 Docker Build Push - comments only

* #320 use v2 Docker Build Push - retain local Image always

* #320 use v2 Docker Build Push - tag with latest for master branch

* #320 use v2 Docker Build Push - use output var refs

.github/workflows/docker.yml

@@ -42,11 +42,18 @@ jobs:
           elif [[ $GITHUB_REF == refs/pull/* ]]; then
             VERSION=pr-${{ github.event.number }}
           fi
+          if [[ $VERSION == master ]]; then
+            VERSION=latest
+          fi
           TAGS="${DOCKER_IMAGE}:${VERSION}"
+          echo ::set-output name=image::${DOCKER_IMAGE}
           echo ::set-output name=version::${VERSION}
           echo ::set-output name=tags::${TAGS}
           echo ::set-output name=created::$(date -u +'%Y-%m-%dT%H:%M:%SZ')
 
+      - name: Show Image Settings
+        run: echo "IMAGE=${{ steps.prep.outputs.image }} VERSION=${{ steps.prep.outputs.version }} TAGS=${{ steps.prep.outputs.tags }}"
+
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v1
 
@@ -70,8 +77,8 @@ jobs:
             org.opencontainers.image.revision=${{ github.sha }}
 
       - name: GHC Unit Tests with Docker Image
-        run: docker run  --entrypoint "/run-tests.sh" geopython/geohealthcheck:${{ steps.prep.outputs.version }}
+        run: docker run  --entrypoint "/run-tests.sh" ${{ steps.prep.outputs.image }}:${{ steps.prep.outputs.version }}
 
       - name: Push to Docker repo (on GH Push only)
         if: ${{ github.event_name == 'push' }}
-        run: docker push geopython/geohealthcheck:${{ steps.prep.outputs.version }}
+        run: docker push ${{ steps.prep.outputs.image }}:${{ steps.prep.outputs.version }}