Consolidate docker checks

bin/build

@@ -17,21 +17,11 @@ BUILD_DIR="$BUILD_ROOT/build"
 # Create directories if they don't exist
 mkdir -p "$BUILD_OUTPUT_DIR" "$FINAL_OUTPUT_DIR" "$SRC_DIR"
 
-# Check for Docker
-if ! command -v docker &>/dev/null; then
-  print_error "Docker is not installed"
-  exit 1
-fi
-
-# Check if Docker daemon is running
-if ! docker info &>/dev/null; then
-  print_error "Docker daemon is not running"
-  print_warning "Start Docker with: sudo systemctl start docker"
-  exit 1
-fi
-
 print_header "Omarchy AUR Package Builder"
 
+# Check Docker is available
+check_docker
+
 # Parse command line arguments
 while [[ $# -gt 0 ]]; do
   case $1 in
@@ -94,8 +84,7 @@ else
 fi
 
 # Build/update the Docker image
-print_info "Building Docker image..."
-docker build -t omarchy-aur-builder:latest -f "$BUILD_DIR/Dockerfile" "$BUILD_DIR"
+build_docker_image "$BUILD_DIR"
 
 print_info "Running AUR package build..."