Docker Cookbook

7.1 Using Docker Compose to Create a WordPress Site | 195

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vagrant_mysql_1 /entrypoint.sh mysqld Up 3306/tcp
vagrant_wordpress_1 /entrypoint.sh apache2-for ... Up 0.0.0.0:80->80/tcp
Discussion
Docker Compose was originally developed by Orchard and was
called 
Fig
. After acquisition of Orchard by Docker Inc., Fig was
renamed 
Docker Compose
. You can expect a tight integration of
Compose with the Docker CLI even though the current Compose
is a separate binary. The source can be found on 
GitHub
.
Compose has the following commands to manage a container environment:
Fast, isolated development environments using Docker.
...
Commands:
build Build or rebuild services
help Get help on a command
kill Kill containers
logs View output from containers
port Print the public port for a port binding
ps List containers
pull Pulls service images
rm Remove stopped containers
run Run a one-off command
scale Set number of containers for a service
start Start services
stop Stop services
restart Restart services
up Create and start containers
The usage of each command is obtained by specifying 
--help
after the command—
for example, 
docker-compose kill --help
. Most commands take 
SERVICE
as a
parameter. A service in Compose is the name given to the running container in the
docker-compose.yml
file. For example, you could stop the WordPress service and start
it again:
$ docker-compose stop wordpress
Stopping vagrant_wordpress_1...
$ docker-compose ps
Name Command State Ports
------------------------------------------------------------------------
vagrant_mysql_1 /entrypoint.sh mysqld Up 3306/tcp
vagrant_wordpress_1 /entrypoint.sh apache2-for ... Exit 0
$ docker-compose start wordpress
Starting vagrant_wordpress_1...
$ docker-compose ps
Name Command State Ports