improve deployment process

scripts/publish-image.sh

@@ -21,20 +21,23 @@ if ! command -v docker >/dev/null 2>&1; then
     exit 1
 fi
 
+if ! docker buildx version >/dev/null 2>&1; then
+    echo "Docker Buildx is required but not available. Please install/enable it in Docker Desktop or via the CLI plugin." >&2
+    exit 1
+fi
+
 read -rp "Image tag [${DEFAULT_TAG}]: " INPUT_TAG
 IMAGE_TAG="${INPUT_TAG:-$DEFAULT_TAG}"
 IMAGE_REF="${REGISTRY_HOST}/${IMAGE_NAME}:${IMAGE_TAG}"
 
+DEFAULT_PLATFORMS="linux/amd64"
+read -rp "Target platforms [${DEFAULT_PLATFORMS}]: " INPUT_PLATFORMS
+TARGET_PLATFORMS="${INPUT_PLATFORMS:-$DEFAULT_PLATFORMS}"
+
 read -rp "Registry username: " REGISTRY_USER
 read -rsp "Registry password or token: " REGISTRY_PASSWORD
 echo
 
-echo "Building image ${IMAGE_REF} ..."
-docker build \
-    --file "${DOCKERFILE_PATH}" \
-    --tag "${IMAGE_REF}" \
-    "${DOCKER_CONTEXT}"
-
 echo "Logging into ${REGISTRY_HOST} ..."
 echo "${REGISTRY_PASSWORD}" | docker login "${REGISTRY_HOST}" \
     --username "${REGISTRY_USER}" \
@@ -45,7 +48,15 @@ cleanup() {
 }
 trap cleanup EXIT
 
-echo "Pushing ${IMAGE_REF} ..."
-docker push "${IMAGE_REF}"
+echo "Bootstrapping buildx builder ..."
+docker buildx inspect --bootstrap >/dev/null
+
+echo "Building and pushing ${IMAGE_REF} for ${TARGET_PLATFORMS} ..."
+docker buildx build \
+    --platform "${TARGET_PLATFORMS}" \
+    --file "${DOCKERFILE_PATH}" \
+    --tag "${IMAGE_REF}" \
+    --push \
+    "${DOCKER_CONTEXT}"
 
 echo "Image pushed successfully."