docker-entrypoint.sh

#!/bin/bash
set -eu

maincfg=/data/configs/znc.conf

[[ -f $maincfg ]] || {
	echo "WARNING: No configuration file found, will generate the default config now..." >&2

	password_salt="$(tr -dc 'A-Za-z0-9!?.,:;/*-+_()' </dev/urandom | head -c 20)"
	password=${PASS:-}
	[[ -n $password ]] || {
		password="$(tr -dc 'A-Za-z0-9!?.,:;/*-+_()' </dev/urandom | head -c 32)"
		echo "WARNING: Empty password detected, auto-generated password is used for ${USER:-admin}: ${password}" >&2
	}

	mkdir -p "$(dirname "${maincfg}")"
	korvike -o "${maincfg}" <<EOF
HideVersion = true
LoadModule = webadmin
Skin = dark-clouds
Version = 1.8.2

<Listener l>
  Port = {{ env "LISTEN_PORT" "16667" }}
  IPv4 = {{ env "USE_IPV4" "true" }}
  IPv6 = {{ env "USE_IPV6" "true" }}
  SSL = false
</Listener>

<User {{ env "USER" "admin" }}>
  Admin      = true
  Nick       = {{ env "USER" "admin" }}
  AltNick    = {{ env "USER" "admin" }}_
  Ident      = {{ env "USER" "admin" }}
  LoadModule = chansaver
  LoadModule = controlpanel

  <Pass password>
    Hash = {{ hash "sha256" "${password}${password_salt}" }}
    Method = SHA256
    Salt = ${password_salt}
  </Pass>
</User>
EOF
}

chown -R znc:znc /data
exec gosu znc znc -d /data -f