chore: update Docker configuration and entrypoint script

- Enhanced .dockerignore to exclude additional build outputs and dependencies.
- Modified dev.mjs and start.mjs to change Docker container startup behavior, removing the --build flag to preserve volumes.
- Updated docker-compose.yml to add a new volume for persisting Claude CLI OAuth session keys.
- Introduced docker-entrypoint.sh to fix permissions on the Claude CLI config directory.
- Adjusted Dockerfile to include the entrypoint script and ensure proper user permissions.

These changes improve the Docker setup and streamline the development workflow.

docker-entrypoint.sh

@@ -0,0 +1,19 @@
+#!/bin/sh
+set -e
+
+# Fix permissions on Claude CLI config directory if it exists
+# This handles the case where a volume is mounted and owned by root
+if [ -d "/home/automaker/.claude" ]; then
+    chown -R automaker:automaker /home/automaker/.claude
+    chmod -R 755 /home/automaker/.claude
+fi
+
+# Ensure the directory exists with correct permissions if volume is empty
+if [ ! -d "/home/automaker/.claude" ]; then
+    mkdir -p /home/automaker/.claude
+    chown automaker:automaker /home/automaker/.claude
+    chmod 755 /home/automaker/.claude
+fi
+
+# Switch to automaker user and execute the command
+exec su-exec automaker "$@"