Add dry-run Docker build to Pull Request CI run

.drone.yml

@@ -26,6 +26,16 @@ steps:
       - pipenv run flake8
       - pipenv run reuse lint
       - pipenv run python -m unittest discover ki
+  - name: docker-dry-run
+    image: plugins/docker:20.18.4@sha256:a8d3d86853c721492213264815f1d00d3ed13f42f5c1855a02f47fa4d5f1e042
+    settings:
+      registry: git.wtf-eg.de
+      repo: git.wtf-eg.de/kompetenzinventar/backend
+      target: ki-backend
+      dry_run: true
+    when:
+      event:
+        - pull_request
 
 ---
 kind: pipeline

Pipfile

@@ -23,7 +23,7 @@ werkzeug = "==2.3.8"
 [dev-packages]
 flake8 = "==7.1.1"
 yapf = "==0.40.2"
-pre-commit = "==3.8.0"
+pre-commit = "==2.13.0"
 reuse = "==0.14.0"
 
 [requires]