FIX broken github action due to outdated buildx

Buildx failed the pipeline and there's some deprecation warnings in
there, so decided to update every stage of the build process to the
current latest see if it fixes it.

.github/workflows/main.yml

@@ -22,10 +22,10 @@ jobs:
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps:
       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
 
       - name: Login to Docker Hub
-        uses: docker/login-action@v1
+        uses: docker/login-action@v3
         with:
           username: ${{ secrets.DOCKER_HUB_USERNAME }}
           password: ${{ secrets.DOCKER_HUB_ACCESS_TOKEN }}
@@ -46,15 +46,17 @@ jobs:
            type=semver,pattern={{major}}
            type=sha
 
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
       - name: Set up Docker Buildx
-        id: buildx
-        uses: docker/setup-buildx-action@v1
+        uses: docker/setup-buildx-action@v3
 
       - name: Build and push
         id: docker_build
-        uses: docker/build-push-action@v2
+        uses: docker/build-push-action@v5
         with:
-          context: ./
+          context: .
           file: ./Dockerfile
           push: ${{ github.event_name != 'pull_request'  }}
           tags: ${{ steps.meta.outputs.tags  }}