Implement versioning for esphome/esphome-lint docker images (#1877)

.github/workflows/docker-lint-build.yml

@@ -17,6 +17,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
+      - name: Set TAG
+        run: |
+          echo "TAG=1.0" >> $GITHUB_ENV
       - name: Pull for cache
         run: |
           docker pull "esphome/esphome-lint:latest" || true
@@ -26,6 +29,7 @@ jobs:
             --cache-from "esphome/esphome-lint:latest" \
             --file "docker/Dockerfile.lint" \
             --tag "esphome/esphome-lint:latest" \
+            --tag "esphome/esphome-lint:${TAG}" \
             .
       - name: Log in to docker hub
         env:
@@ -33,4 +37,5 @@ jobs:
           DOCKER_PASSWORD: ${{ secrets.DOCKER_PASSWORD }}
         run: docker login -u "${DOCKER_USER}" -p "${DOCKER_PASSWORD}"
       - run: |
+          docker push "esphome/esphome-lint:${TAG}"
           docker push "esphome/esphome-lint:latest"