diff --git a/bin/build b/bin/build
index b63fdb5..016119b 100755
--- a/bin/build
+++ b/bin/build
@@ -123,17 +123,20 @@ else
   print_success "GPG signing key and passphrase loaded"
 fi
 
-# Build/update the Docker image with host user's UID/GID for proper permissions
+# Build/update the Docker image
 print_info "Building Docker image..."
-HOST_UID=$(id -u)
-HOST_GID=$(id -g)
-docker build \
-  --build-arg BUILD_UID="$HOST_UID" \
-  --build-arg BUILD_GID="$HOST_GID" \
-  -t omarchy-aur-builder:latest \
-  -f "$BUILD_DIR/Dockerfile" "$BUILD_DIR"
+docker build -t omarchy-aur-builder:latest -f "$BUILD_DIR/Dockerfile" "$BUILD_DIR"
 
 print_info "Running AUR package build..."
+
+# Ensure output directory is writable by container user
+# The container runs as 'builder' user, so we need to make output writable
+if [ "$(id -u)" -eq 0 ]; then
+  chmod -R 777 "$ARCH_DIR"
+else
+  sudo chown -R $(id -u):$(id -g) "$ARCH_DIR" 2>/dev/null || chmod -R 777 "$ARCH_DIR"
+fi
+
 # Build Docker arguments
 DOCKER_ARGS=(
   --rm
diff --git a/build/Dockerfile b/build/Dockerfile
index 6e02e57..498caf5 100644
--- a/build/Dockerfile
+++ b/build/Dockerfile
@@ -4,23 +4,14 @@ FROM archlinux:latest
 RUN pacman -Syu --noconfirm && \
     pacman -S --noconfirm base-devel git sudo wget jq gnupg
 
-# Create build user (required for makepkg)
-# Note: UID/GID can be overridden at runtime via --build-arg
-ARG BUILD_UID=1000
-ARG BUILD_GID=1000
+# Create build user (required for makepkg - cannot run as root)
+RUN useradd -m -G wheel builder && \
+    echo "builder ALL=(ALL) NOPASSWD: ALL" >> /etc/sudoers
 
-# Only create builder user if not using root (UID 0)
-RUN if [ ${BUILD_UID} -ne 0 ]; then \
-      groupadd -g ${BUILD_GID} builder && \
-      useradd -m -u ${BUILD_UID} -g ${BUILD_GID} -G wheel builder && \
-      echo "builder ALL=(ALL) NOPASSWD: ALL" >> /etc/sudoers; \
-    fi
-
-# Switch to builder user if not root, otherwise stay as root
-USER ${BUILD_UID}
+USER builder
 WORKDIR /src
 
-# Setup GPG directory for whichever user we're using
+# Setup GPG directory
 RUN mkdir -p ~/.gnupg && chmod 700 ~/.gnupg
 
 # Default command