clean up docker release workflow

Author: wing328

.github/workflows/docker-release.yml

@@ -1,7 +1,6 @@
 name: Release to DockerHub (snapshot, stable)
 
 on:
-  pull_request:
   push:
     branches:
       - master
@@ -70,4 +69,4 @@ jobs:
         run: |
           cp docker-entrypoint.sh ./modules/openapi-generator-cli
           docker buildx create --use
-          docker buildx build --push --platform linux/amd64,linux/arm64 --label=org.opencontainers.image.created=${{ env.build_date }} --label=org.opencontainers.image.title=openapi-generator-cli --label=org.opencontainers.image.revision=$GITHUB_SHA --label=org.opencontainers.image.version=${{ env.cli_version }} -t ${{ env.DOCKER_CODEGEN_CLI_IMAGE_NAME }}:latest -t ${{ env.DOCKER_CODEGEN_CLI_IMAGE_NAME }}:${{ github.ref_name }} -t ${{ env.DOCKER_CODEGEN_CLI_IMAGE_NAME }} -t ${{ env.DOCKER_CODEGEN_CLI_IMAGE_NAME }}:latest-release ./modules/openapi-generator-cli
+          docker buildx build --push --platform linux/amd64,linux/arm64 --label=org.opencontainers.image.created=${{ env.build_date }} --label=org.opencontainers.image.title=openapi-generator-cli --label=org.opencontainers.image.revision=$GITHUB_SHA --label=org.opencontainers.image.version=${{ env.cli_version }} -t ${{ env.DOCKER_CODEGEN_CLI_IMAGE_NAME }}:latest -t ${{ env.DOCKER_CODEGEN_CLI_IMAGE_NAME }}:${{ github.ref_name }} -t ${{ env.DOCKER_CODEGEN_CLI_IMAGE_NAME }} -t ${{ env.DOCKER_CODEGEN_CLI_IMAGE_NAME }}:latest-release ./modules/openapi-generator-cli