Update build.yml

Author: Germey

.github/workflows/build.yml

@@ -29,16 +29,12 @@ jobs:
           username: germey
           password: ${{ secrets.DOCKERHUB_LOGIN_PASSWORD }}
 
-      - name: Extract branch name
-        id: branch
-        shell: bash
-        run: echo "##[set-output name=tag;]$(echo ${GITHUB_REF##*/} | sed 's/master/latest/')"
-
       - name: Build and push
         uses: docker/build-push-action@v2
         with:
           context: .
           push: true
           platforms: linux/amd64
           tags: |
-            germey/proxypool:${{ steps.branch.outputs.tag }}
+            germey/proxypool:latest
+            germey/proxypool:master