fix(ci): Update Docker build steps to use buildx for multi-platform support

Signed-off-by: Magnus Ullberg <magnus@ullberg.us>

Author: ullbergm

.github/workflows/release.yml

@@ -67,6 +67,8 @@ jobs:
 
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
+        with:
+          driver-opts: network=host
 
       - name: Login to GitHub Container Registry
         uses: docker/login-action@v3
@@ -77,9 +79,11 @@ jobs:
 
       - name: Build and Push Controller Image
         run: |
-          make docker-buildx \
-            IMG=${{ env.CONTROLLER_IMAGE }}:${{ needs.prepare.outputs.version_tag }} \
-            PLATFORMS=linux/arm64,linux/amd64
+          docker buildx build \
+            --push \
+            --platform=linux/arm64,linux/amd64 \
+            --tag ${{ env.CONTROLLER_IMAGE }}:${{ needs.prepare.outputs.version_tag }} \
+            -f Dockerfile .
 
       - name: Tag Latest
         run: |
@@ -116,6 +120,8 @@ jobs:
 
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
+        with:
+          driver-opts: network=host
 
       - name: Login to GitHub Container Registry
         uses: docker/login-action@v3
@@ -126,9 +132,11 @@ jobs:
 
       - name: Build and Push Plugin Image
         run: |
-          make plugin-buildx \
-            PLUGIN_IMG=${{ env.PLUGIN_IMAGE }}:${{ needs.prepare.outputs.version_tag }} \
-            PLATFORMS=linux/arm64,linux/amd64
+          docker buildx build \
+            --push \
+            --platform=linux/arm64,linux/amd64 \
+            --tag ${{ env.PLUGIN_IMAGE }}:${{ needs.prepare.outputs.version_tag }} \
+            object-lease-console-plugin
 
       - name: Tag Latest
         run: |
@@ -152,6 +160,8 @@ jobs:
 
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
+        with:
+          driver-opts: network=host
 
       - name: Login to GitHub Container Registry
         uses: docker/login-action@v3
@@ -163,10 +173,11 @@ jobs:
       - name: Build and Push Operator Image
         working-directory: object-lease-operator
         run: |
-          make docker-buildx \
-            IMG=${{ env.OPERATOR_IMAGE }}:${{ needs.prepare.outputs.version_tag }} \
-            VERSION=${{ needs.prepare.outputs.version }} \
-            PLATFORMS=linux/arm64,linux/amd64,linux/s390x,linux/ppc64le
+          docker buildx build \
+            --push \
+            --platform=linux/arm64,linux/amd64,linux/s390x,linux/ppc64le \
+            --tag ${{ env.OPERATOR_IMAGE }}:${{ needs.prepare.outputs.version_tag }} \
+            -f Dockerfile .
 
       - name: Tag Latest
         run: |