docker-entrypoint.sh

#!/bin/sh
set -ex

if [ "$1" = "bash" ]; then
    exec "bash"
fi

if [ "$1" = "sh" ]; then
    exec "sh"
fi

if [ "$1" = "rails" -o "$2" = "rails" -o "$1" = "unicorn" ]; then
    RAILS_VERSION=$(bundle exec rails -v | awk '{print $2}' | tr '.' ' ' | awk '{print $1}')
    if [[ -n ${DB_HOST} ]]; then
      dockerize -wait tcp://${DB_HOST}:${DB_PORT} -wait tcp://${ELASTIC_HOST}:${ELASTIC_PORT} -wait tcp://${REDIS_HOST}:${REDIS_PORT} -timeout 300s
    fi
    if [ ${RAILS_VERSION} -ge 5 ]; then
      rails db:migrate
    else
      rake db:migrate
    fi
    exec "$@"
fi