I got a very basic Dockerfile:
FROM php:8.1-fpm-alpine
WORKDIR /app
COPY . .
EXPOSE 80
RUN nginx
I even tried
ENTRYPOINT [ "nginx" ]
but then the container is continuously restarting instead of starting.
But when I start the container (having RUN nginx in place) and I attach a console to the container and run nginx, the process starts.
You could try the CMD command.
CMD ["nginx", "-g", "daemon off;"]
Your Dockerfile would then look like this:
FROM php:8.1-fpm-alpine
WORKDIR /app
COPY . .
EXPOSE 80
CMD ["nginx", "-g", "daemon off;"]
Source:
https://docs.nginx.com/nginx/admin-guide/installing-nginx/installing-nginx-docker/
https://www.baeldung.com/linux/nginx-docker-container