docker fixes

Author: tac0turtle

.github/workflows/docker.yml

@@ -4,6 +4,9 @@ name: docker
 
 on:
   workflow_dispatch: {}
+  pull_request:
+    branches:
+      - main
   push:
     tags:
       - v*
@@ -37,4 +40,4 @@ jobs:
           docker run --privileged --rm tonistiigi/binfmt --install arm64,amd64
           docker buildx create --use --name cross-builder
       - name: Build and push image
-        run: make docker-build-push
+        run: make docker-build-push