The source project of this merge request has been removed.
build(docker): add Nginx Unit image
This MR add a docker image using the Nginx Unit web server. This permit to deploy Castopod with a single application container instead of the three containers required by Nginx+PHP-FPM(+video-clipper). The configuration variables of the unit container are the same as the PHP-FPM one and a mariadb container still required.
Also, the image is built by the CI with kaniko as the other production images and a new CI variable is used (DOCKER_IMAGE_UNIT
with the name of the image on the Docker Hub).