mailsail docker dont start because of missing ipv6

[elraro]

Mainsail Version:

edge

Browser:

Firefox

Device:

Desktop PC

Operating System:

Windows

What happened?

If you use Docker containers with IPV6 disabled, mainsail is not able to start.

/docker-entrypoint.sh: /docker-entrypoint.d/ is not empty, will attempt to perform configuration
/docker-entrypoint.sh: Looking for shell scripts in /docker-entrypoint.d/
/docker-entrypoint.sh: Launching /docker-entrypoint.d/10-listen-on-ipv6-by-default.sh
10-listen-on-ipv6-by-default.sh: info: ipv6 not available
/docker-entrypoint.sh: Sourcing /docker-entrypoint.d/15-local-resolvers.envsh
/docker-entrypoint.sh: Launching /docker-entrypoint.d/20-envsubst-on-templates.sh
/docker-entrypoint.sh: Launching /docker-entrypoint.d/30-tune-worker-processes.sh
/docker-entrypoint.sh: Configuration complete; ready for start up
2025/02/02 18:41:05 [emerg] 1#1: socket() [::]:80 failed (97: Address family not supported by protocol)
nginx: [emerg] socket() [::]:80 failed (97: Address family not supported by protocol)

Maybe because PR https://github.com/mainsail-crew/mainsail/pull/2030/files

What did you expect to happen instead?

Maybe is a good idea use ENV and a Docker entrypoint script. For example:

#!/bin/sh

CONFIG_FILE="/etc/nginx/conf.d/default.conf"

if [ "$IPV6" = "disabled" ]; then
    echo "IPv6 is disabled. Removing IPv6 listen directive from Nginx config."
    sed -i '/listen \[::\]:80;/d' "$CONFIG_FILE"
fi

Then, modify the Dockerfile:

...
COPY nginx-ipv6.sh /docker-entrypoint.d/nginx-ipv6.sh
...

And finally run with IPV6 ENV flag to disable IPV6:

docker run \
  --name mainsail \
  -v "$(pwd)/config.json:/usr/share/nginx/html/config.json" \
  -p "8080:80" \
  -e IPV6=disabled \
  ghcr.io/mainsail-crew/mainsail 

How to reproduce this bug?

You can create a Docker network without IPV6 support, just dont use the flag --ipv6

docker create network ...

And attach this network to your container. Im my case, im using this ipvlan network:

[
    {
        "Name": "vlan100",
        "Id": "b0a3b26d77117200719cd82df34f857dc9c21fadeff88689e33717cee08306e6",
        "Created": "2023-01-20T16:38:28.743335437Z",
        "Scope": "local",
        "Driver": "ipvlan",
        "EnableIPv6": false,
        "IPAM": {
            "Driver": "default",
            "Options": {},
            "Config": [
                {
                    "Subnet": "192.168.100.0/24",
                    "Gateway": "192.168.100.1"
                }
            ]
        },
        "Internal": false,
        "Attachable": false,
        "Ingress": false,
        "ConfigFrom": {
            "Network": ""
        },
        "ConfigOnly": false,
        "Containers": {

Additional information:

No response