dmove

#!/bin/bash
echo "Hello, this utility will help you to transfer containers with volumes"

. ~/.dmove

CONTAINER=$1

if [ -z $CONTAINER ]; then
    echo -e "List of all running docker containers, sorted by name: "
    docker ps --format "{{.Names}}" | sort | column
    read -p "Type the name of container which you want to backup, default is $CONTAINER : " input
    CONTAINER=${input:-$CONTAINER}
fi

move-container "$CONTAINER"

# Auto transfer volumes
if docker inspect -f '{{ range .Mounts }}{{println .Source .Destination}}{{ end }}' $CONTAINER ; then

    echo "Container $CONTAINER has following volumes : "
    docker inspect -f '{{ range .Mounts }}{{println .Source .Destination}}{{ end }}' $CONTAINER

    read -p "Would you like to move volumes now? " -n 1 -r
    echo
    if [[ $REPLY =~ ^[Yy]$ ]]; then
        move-volumes "$CONTAINER" "$TAG" nginx-proxy
    fi

else
    echo "Container $CONTAINER does not have any volumes so no data to transfer"
fi


# Auto transfer mysql data
if docker inspect --format='{{.Config.Env}}' $CONTAINER | grep -q "MYSQL_HOST" ; then
    echo "Seems like you also need to backup database! ENV variables related to SQL containers founded: "
    docker inspect --format='{{json .Config.Env}}' $CONTAINER | jq . | tr -d '[]", ' | grep 'MYSQL_*'
    read -p "Would you like to backup SQL database now ? " -n 1 -r
    echo

    # TO-DO: warning about unique hostname and creation of separate docker network
    if [[ $REPLY =~ ^[Yy]$ ]]; then
        MYSQL_HOST=$(docker inspect --format='{{json .Config.Env}}' $CONTAINER | jq . | tr -d '[]", ' | grep 'MYSQL_HOST' | cut -d= -f2)
        db_suffix="_db"  # convention
        DB_CONTAINER_NAME="$CONTAINER$db_suffix"
        read -p "Type the name of database container, default is $CONTAINER$db_suffix: " input
        DB_CONTAINER_NAME=${input:-$DB_CONTAINER_NAME}
        move-container "$DB_CONTAINER_NAME"   # to save ENV # TO-DO: return image tag to fill insted $HOSTNAME/$DB_CONTAINER_NAME
        move-db "$CONTAINER $HOSTNAME/$DB_CONTAINER_NAME nginx-proxy $MYSQL_HOST 1"  # make deploy
    fi

fi

# Warning about DNS records
if docker inspect --format='{{.Config.Env}}' $CONTAINER | grep -q "VIRTUAL_HOST" ; then
    VIRTUAL_HOST=$(docker inspect --format='{{json .Config.Env}}' $CONTAINER | jq . | tr -d '[]", ' | grep 'VIRTUAL_HOST' | cut -d= -f2)
    echo "Do not forget to update A DNS records for $VIRTUAL_HOST points to $REMOTE_HOST"
    nslookup -type=a $VIRTUAL_HOST
    # TO-DO: automatic adding via popular APIs: CloudFlare, Digitalocean, Reg.ru, Yandex DNS
fi

# Warning about Docker Hub
echo "If ENV variables of your container are not contain sensitive data like API keys you can push image to Docker Hub. It is free"
# TO-DO: push if yes

# TO-DO: Warning about bad image versionning in case of transfering docker-compose file