fix: various fixes

- Add uid and gid to dev user
- Entry point script is mounted and not built in docker container
- Change image name

entrypoint.sh

@@ -51,4 +51,6 @@ fi
 
 # The image entrypoint is root only for one-time runtime setup; the shell/OpenCode
 # process itself always runs as the unprivileged dev user.
-exec su -s /bin/bash dev -c 'cd "${START_DIR:-/workspace}" && exec "$@"' -- "$@"
+# exec su -s /bin/bash dev -c 'cd "${START_DIR:-/workspace}" && exec "$@"' -- "$@"
+cd "${START_DIR:-/workspace}"
+exec "$@"