Docker helper

start_mysql.sh

# docker stop mysql_5.7
# docker run -p 3306:3306 -e MYSQL_ALLOW_EMPTY_PASSWORD=true -e MYSQL_DATABASE=circle_test -e MYSQL_HOST=127.0.0.1 -e MYSQL_USER=root  --shm-size 2G --name mysql_5.7 circleci/mysql:5.7-ram
docker restart mysql_5.7

start_postgres.sh

# docker restart postgres_10.5
# docker run -p 5432:5432 -e POSTGRES_PASSWORD=pass -e POSTGRES_USER=postgres  --shm-size 2G --name postgres_10.5 circleci/postgres:10.5-alpine-postgis-ram
# docker stop postgres_10.5
docker restart postgres_10.5

start_redis.sh

# docker run  -p 6379:6379 --name redis_5  library/redis:5
docker restart redis_5