docker-php-entrypoint

#!/bin/bash

set -e

if [[ -n "${DEBUG}" ]]; then
    set -x
fi

# Backwards compatibility for old env vars names.
_backwards_compatibility() {
    declare -A vars
    # vars[DEPRECATED]="ACTUAL"
    vars[SSMTP_SERVERT]="MSMTP_SERVER"
    vars[SSMTP_PORT]="MSMTP_PORT"

    for i in "${!vars[@]}"; do
        # Use value from old var if it's not empty and the new is.
        if [[ -n "${!i}" && -z "${!vars[$i]}" ]]; then
            export ${vars[$i]}="${!i}"
        fi
    done
}

_gotpl() {
    if [[ -f "/etc/gotpl/$1" ]]; then
        gotpl "/etc/gotpl/$1" > "$2"
    fi
}

process_templates() {
    _backwards_compatibility
    _gotpl "msmtp.conf.tmpl" "/etc/msmtprc"
    _gotpl "vhost.conf.tmpl" "/etc/apache2/sites-available/000-default.conf"
	_gotpl "vhostssl.conf.tmpl" "/etc/apache2/sites-available/default-ssl.conf"
	_gotpl "php.settings.tmpl" "/usr/local/etc/php/conf.d/custom-php-settings.ini"
}

process_templates

# https://github.com/docker-library/php/blob/master/7.3/buster/apache/docker-php-entrypoint
# Add default official image command

# first arg is `-f` or `--some-option`
if [ "${1#-}" != "$1" ]; then
	set -- apache2-foreground "$@"
fi

exec "$@"