push to docker for testing

.github/workflows/push.yml

@@ -0,0 +1,39 @@
+name: Traefik Forward Auth
+on: [push]
+jobs:
+  test:
+    name: Test with Go version -
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        go: ['1.12', '1.13', '1.14']
+
+    steps:
+      - uses: actions/checkout@v1
+
+      - name: Setup Go
+        uses: actions/setup-go@v1
+        with:
+          go-version: ${{ matrix.go }}
+
+      - name: Run Tests
+        run: go test ./...
+
+  publish:
+    name: Publish Docker image
+    needs: test
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@master
+        with:
+          fetch-depth: '0'
+      - name: Publish to Docker Registry
+        uses: docker/build-push-action@v1
+        with:
+          repository: ${{ github.repository }}
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+          tag_with_ref: true
+          tag_with_sha: true
+