Fix Docker image action

Author: pblottiere

.github/workflows/dockerhub.yml

@@ -3,20 +3,29 @@ name: "Docker image latest"
 on:
   push:
     branches:
-    - master
+      - master
+  pull_request:
 
 jobs:
   build:
     name: Docker image latest
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     steps:
       - name: Check out repository code
-        uses: actions/checkout@v2
-      - name: Push image to dockerhub
-        uses: docker/build-push-action@v1
+        uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to Docker Hub
+        uses: docker/login-action@v3
         with:
-          path: ./docker
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_PASSWORD }}
-          repository: pgpointcloud/pointcloud
-          tags: latest
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v5
+        with:
+          context: ./docker
+          push: true
+          tags: pgpointcloud/pointcloud:latest