ci(docker): run on pull request events (#8)

.github/workflows/docker-build.yml

@@ -1,6 +1,11 @@
 name: Docker build
 
 on:
+  pull_request:
+    types:
+      - "opened"
+      - "reopened"
+      - "synchronize"
   push:
     paths-ignore:
       - "docs"
@@ -47,6 +52,13 @@ jobs:
             echo "cache_from=type=registry,ref=${REGISTRY_IMAGE}:buildcache" >> $GITHUB_OUTPUT
             echo "cache_to=" >> $GITHUB_OUTPUT
           fi
+          
+          # No token present, might be a PR. Allow build without push
+          if [ "$IMAGES" = "" ]; then
+            IMAGES="gameonwhales/inputtino"
+            PUSH=false
+          fi
+          
           echo "images=${IMAGES}" >> $GITHUB_OUTPUT
           echo "push=${PUSH}" >> $GITHUB_OUTPUT
           echo "github_server_url=${GITHUB_SERVER_URL}" >> $GITHUB_OUTPUT
@@ -90,7 +102,7 @@ jobs:
           username: ${{ github.repository_owner }}
           password: ${{ secrets.GHCR_TOKEN }}
 
-      - name: Build Wolf
+      - name: Build inputtino
         uses: docker/build-push-action@v3
         with:
           builder: ${{ steps.buildx.outputs.name }}
@@ -103,4 +115,4 @@ jobs:
             BASE_IMAGE=ghcr.io/games-on-whales/base:edge
             IMAGE_SOURCE=${{ steps.prep.outputs.github_server_url }}/${{ github.repository }}
           cache-from: ${{ steps.prep.outputs.cache_from }}
-          cache-to: ${{ steps.prep.outputs.cache_to }}
+          cache-to: ${{ steps.prep.outputs.cache_to }}