docker-entrypoint.sh

#!/usr/bin/env bash

set -o errexit
set -o nounset
set -o pipefail

config=/smsender/config/config.yml

MYSQL_USER=${MYSQL_USER:-smsender_user}
MYSQL_PASSWORD=${MYSQL_PASSWORD:-smsender_password}
MYSQL_HOST=${MYSQL_HOST:-db}
MYSQL_PORT=${MYSQL_PORT:-3306}
MYSQL_DATABASE=${MYSQL_DATABASE:-smsender}

echo "Configure config.yml"
if [[ ! -f ${config} ]]; then
  cp /config.default.yml ${config}
  sed -Ei "s/MYSQL_USER/${MYSQL_USER}/" ${config}
  sed -Ei "s/MYSQL_PASSWORD/${MYSQL_PASSWORD}/" ${config}
  sed -Ei "s/MYSQL_HOST/${MYSQL_HOST}/" ${config}
  sed -Ei "s/MYSQL_PORT/${MYSQL_PORT}/" ${config}
  sed -Ei "s/MYSQL_DATABASE/${MYSQL_DATABASE}/" ${config}
  echo OK
else
  echo SKIP
fi

echo "Wait until database ${MYSQL_HOST}:${MYSQL_PORT} is ready..."
until nc -z "${MYSQL_HOST}" "${MYSQL_PORT}"
do
  sleep 1
done

sleep 1

echo "Starting app"
cd /smsender || exit 255
./smsender -c "${config}"