Docker Compose

Docker compose is dependent upon docker engine. To install docker, follow Install docker link for this.

Docker compose is used to group multiple services using a single file. e.g., if we need to have two containers for our applications, one for nodejs and another one for postgres DB, we can create a single file to create/run containers using a single file.

Install docker-compose

For complete documentation, click here

For linux, follow below steps:-

Download compose:-

 sudo curl -L "https://github.com/docker/compose/releases/download/1.26.2/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose

Change executable permissions for docker-compose:-
```
 sudo chmod +x /usr/local/bin/docker-compose
```
Verify docker-compose is available now using below command. If not, check your PATH environment variable.
```
 docker-compose -v
```

Create docker-compose.yml

docker-compose.yml is the file, which can be used to build multiple containers and start them in one go.

For docker-compose documentation, click here

An example repo is present here for sample docker-compose files for different type of services.