Connect to mysql db docker

connectdb.sh

#!/bin/bash -eu
function getContainerEnv() {
  docker inspect -f '{{range $index, $value := .Config.Env}}{{println $value}}{{end}}' $1 | grep $2 | cut -d "=" -f2
}

dbUser=$(getContainerEnv mysql MYSQL_USER)
dbPassword=$(getContainerEnv mysql MYSQL_PASSWORD)
dbRootPassword=$(getContainerEnv mysql MYSQL_ROOT_PASSWORD)
dbName=$(getContainerEnv mysql MYSQL_DATABASE)
if [ "${1:-}" = "--root" ] || [ "${1:-}" = "-r" ]; then 
  shift 1
  docker exec -ti mysql mysql -uroot -p${dbRootPassword} ${dbName} $@
else 
  docker exec -ti mysql mysql -u${dbUser} -p${dbPassword} ${dbName} $@
fi