ENTRYPOINT ["uwsgi", "--ini /home/docker/app/uwsgi_app.ini"]

uWSGI running as root, you can use --uid/--gid/--chroot options
*** WARNING: you are running uWSGI as root !!! (use the --uid flag) ***

$ docker run -itP uwsgi_app:0.1 --uid=docker

$ docker run -itP --entrypoint bash uwsgi_app:0.1 --uid=docker
bash: --uid=docker: invalid option

$ docker run -itP --entrypoint bash uwsgi_app:0.1
[ root@88941de25b1f:/home/docker ]$ uwsgi --ini /home/docker/app/uwsgi_app.ini --uid=docker
user docker not found.