diff --git a/docker/entrypoint.sh b/docker/entrypoint.sh
index c22af76..7ce7385 100644
--- a/docker/entrypoint.sh
+++ b/docker/entrypoint.sh
@@ -1,5 +1,5 @@
 #!/bin/bash
-+set -euo pipefail
+set -euo pipefail
 
 echo "=== Container Starting ==="
 echo "Running initialization script..."
diff --git a/docker/frankenphp/Dockerfile b/docker/frankenphp/Dockerfile
index 80f0b97..3508fdc 100644
--- a/docker/frankenphp/Dockerfile
+++ b/docker/frankenphp/Dockerfile
@@ -34,16 +34,19 @@ ENV COMPOSER_ALLOW_SUPERUSER=1
 # Change PHP config
 COPY docker/php/php.ini /usr/local/etc/php/conf.d/base.ini
 
-# Install supervisord and Node.js (includes npm)
-RUN apt-get update && apt-get install -y \
+# Install supervisord, Node.js, and su-exec
+RUN apt-get update && apt-get install -y --no-install-recommends \
     supervisor \
     curl \
-    --no-install-recommends \
+    gosu \
     && curl -fsSL https://deb.nodesource.com/setup_lts.x | bash - \
     && apt-get install -y nodejs \
     && apt-get clean \
     && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
 
+# Apply the user/group IDs to www-data
+RUN usermod -u ${USER_ID} www-data && groupmod -g ${GROUP_ID} www-data
+
 # Copy supervisord config
 COPY docker/frankenphp/supervisord/supervisord.conf /etc/supervisor/supervisord.conf
 
diff --git a/docker/init.sh b/docker/init.sh
index 6fd8671..c8e47e4 100644
--- a/docker/init.sh
+++ b/docker/init.sh
@@ -48,21 +48,33 @@ echo -e "${GREEN}Setup completed.${NC}"
 if [ -f "/app/composer.json" ] && [ ! -d "/app/vendor" ]; then
     echo -e "${YELLOW}Installing Composer dependencies...${NC}"
 
-    # Install dependencies based on environment
+    # Set up composer environment variables for www-data user
+    export HOME=/var/www
+    export COMPOSER_HOME=/var/www/.composer
+    export COMPOSER_CACHE_DIR=/var/www/.composer/cache
+
+    # Create composer cache directory and set ownership
+    echo -e "${YELLOW}Setting up composer cache...${NC}"
+    mkdir -p /var/www/.composer/cache
+    chown -R www-data:www-data /var/www/.composer
+
+    # Make /app writable by www-data (critical for mounted volumes)
+    echo -e "${YELLOW}Ensuring /app is writable...${NC}"
+    chmod 777 /app
+
+    # Install dependencies based on environment AS www-data user
     if [ "$YII_ENV" = "prod" ]; then
         # Production: exclude dev dependencies and optimize autoloader
-        composer install --no-dev --optimize-autoloader --no-interaction
+        gosu www-data env HOME=/var/www COMPOSER_HOME=/var/www/.composer COMPOSER_CACHE_DIR=/var/www/.composer/cache \
+            composer install --no-dev --optimize-autoloader --no-interaction
     else
         # Development: include dev dependencies
-        composer install --optimize-autoloader --no-interaction
-    fi
-
-    # Set proper ownership for vendor directory if possible
-    if chown -R www-data:www-data /app/vendor 2>/dev/null; then
-        echo -e "${GREEN}✓ Vendor directory ownership set${NC}"
+        gosu www-data env HOME=/var/www COMPOSER_HOME=/var/www/.composer COMPOSER_CACHE_DIR=/var/www/.composer/cache \
+            composer install --optimize-autoloader --no-interaction
     fi
 
     echo -e "${GREEN}✓ Composer dependencies installed successfully.${NC}"
+    echo -e "${GREEN}✓ Both vendor/ and node_modules/ should have correct permissions.${NC}"
 fi
 
 echo -e "${GREEN}Starting supervisord...${NC}"