Fix formatting of 'build-args' parameter for docker build (#3105)

* Fix formatting of 'build-args' parameter for docker build

* Remove quotes

.github/workflows/docker.yaml

@@ -67,7 +67,9 @@ jobs:
           push: true
           target: production
           tags: ${{ env.docker_tags }}
-          build-args: commit_hash="${{ env.git_commit_hash }}", commit_date="${{ env.git_commit_date }}"
+          build-args: |
+            commit_hash=${{ env.git_commit_hash }}
+            commit_date=${{ env.git_commit_date }}
       - name: Push to Stable Branch
         uses: ad-m/github-push-action@master
         if: env.stable_release == 'true'