enforce deploy PR preview happens after environment build

Author: trevorcampbell

.github/workflows/deploy_pr_preview.yml

@@ -12,6 +12,12 @@ jobs:
       packages: write
 
     steps:
+      - name: wait for potential build environment update
+        uses: lewagon/[email protected]
+        with:
+          ref: ${{ github.ref }}
+          check-name: 'Rebuild docker image'
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
       - name: checkout
         uses: actions/checkout@v2
         with:

.github/workflows/update_build_environment.yml

@@ -6,6 +6,7 @@ on:
       - Dockerfile
 jobs:
   rebuild-docker:
+    name: Rebuild docker image
     runs-on: ubuntu-latest
     permissions:
       contents: write