Running 'nginx -s reload' within container yields error

[KWottrich]

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Expected Behavior

When I run nginx -s reload within the container, it should reload the config files without requiring a restart of nginx or the container.

Current Behavior

Running nginx -s reload yields the following error: open() "/run/nginx/nginx.pid" failed (2: No such file or directory).
It looks like this is because the default nginx.conf sets the PID location to /run/nginx.pid, but running nginx -V shows that it's expecting the PID to be at /run/nginx/nginx.pid. This is probably a matter of either adding mkdir /run/nginx to the dockerfile and changing the default nginx.conf to point to the new location, or recompiling nginx to expect the PID at /run/nginx.pid.

Steps to Reproduce

1. Pull the latest SWAG docker image from dockerhub
2. Start up a container
3. Run docker exec -it <container_name> nginx -s reload

Environment

OS: Ubuntu 20.04.1
CPU architecture: x86_64
How docker service was installed: Add official Docker repo, installed through Apt (followed instructions at https://docs.docker.com/engine/install/ubuntu/)

Command used to create docker container (run/create/compose/screenshot)

docker-compose.yaml:

version: "2.4"
services:
  gateway:
    image: linuxserver/swag
    container_name: gateway
    cap_add:
      - NET_ADMIN
    environment:
      - PUID=1000
      - PGID=1000
      - TZ=America/Chicago
      - URL=my.domain
      - SUBDOMAINS=wildcard
      - VALIDATION=dns
      - DNSPLUGIN=cloudflare
      - EMAIL=my.email@gmail.com
    volumes:
      - /srv/gateway:/config
    ports:
      - 443:443
      - 80:80
    restart: unless-stopped

Docker logs

swag.log

[github-actions]

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[Roxedus]

Here is some related issues from before the rename:
linuxserver-archive/docker-letsencrypt#243 (comment)
linuxserver-archive/docker-letsencrypt#305
linuxserver-archive/docker-letsencrypt#434

[nemchik]

nginx -c /config/nginx/nginx.conf -s reload should work, but in general the recommendation is to restart the container.

[davidnewhall]

Over a year later, the provided command still works. Thank you so much for ensuring reload is useful. I have some swag containers that run multiple websites, and restarting the front-end proxy is not always an ideal situation.

<3