[misc] add manual workflow

Author: Aleksandr Petrukhin

.github/workflows/main.yml

@@ -9,19 +9,18 @@ jobs:
     runs-on: ubuntu-latest
     name: "Build Kafka-Proxy image"
     steps:
+      - name: Get the tag
+        id: get_tag
+        run: echo ::set-output name=VERSION::${GITHUB_REF/refs\/tags\//}
       - name: "Check out repository"
         uses: actions/checkout@v2
-
+        with:
+          ref: ${{ steps.get_tag.outputs.result }}
       - name: "Login"
         uses: docker/login-action@v1
         with:
           username: ${{ secrets.DOCKER_USERNAME }}
           password: ${{ secrets.DOCKER_PASSWORD }}
-
-      - name: Get the tag
-        id: get_tag
-        run: echo ::set-output name=VERSION::${GITHUB_REF/refs\/tags\//}
-
       - name: "Publish to Docker Hub"
         uses: docker/build-push-action@v2
         with:

.github/workflows/manual.yml

@@ -0,0 +1,22 @@
+name: 'Manual build'
+on: [workflow_dispatch]
+
+jobs:
+  build_docker:
+    runs-on: ubuntu-latest
+    name: "Build Kafka-Proxy image"
+    steps:
+      - name: "Check out repository"
+        uses: actions/checkout@v2
+
+      - name: "Login"
+        uses: docker/login-action@v1
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+
+      - name: "Publish to Docker Hub"
+        uses: docker/build-push-action@v2
+        with:
+          push: true
+          tags: shmel1k/kafka-proxy:latest