#Docker
- [Docker usage](#docker-usage)[](.html)
- [Get and run a Shaarli image](#get-and-run-a-shaarli-image)[](.html)
- [Resources](#resources)[](.html)

## Docker usage
### Basics
Install [Docker](https://www.docker.com/), by following the instructions relevant[](.html)
to your OS / distribution, and start the service.

#### Search an image on [DockerHub](https://hub.docker.com/)[](.html)

```bash
$ docker search debian

NAME            DESCRIPTION                                     STARS   OFFICIAL   AUTOMATED
ubuntu          Ubuntu is a Debian-based Linux operating s...   2065    [OK][](.html)
debian          Debian is a Linux distribution that's comp...   603     [OK][](.html)
google/debian                                                   47                 [OK][](.html)
```

#### Show available tags for a repository
```bash
$ curl https://index.docker.io/v1/repositories/debian/tags | python -m json.tool

% Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
Dload  Upload   Total   Spent    Left  Speed
100  1283    0  1283    0     0    433      0 --:--:--  0:00:02 --:--:--   433
```

Sample output:
```json
[[](.html)
    {
        "layer": "85a02782",
        "name": "stretch"
    },
    {
        "layer": "59abecbc",
        "name": "testing"
    },
    {
        "layer": "bf0fd686",
        "name": "unstable"
    },
    {
        "layer": "60c52dbe",
        "name": "wheezy"
    },
    {
        "layer": "c5b806fe",
        "name": "wheezy-backports"
    }
]

```

#### Pull an image from DockerHub
```bash
$ docker pull repository[:tag][](.html)

$ docker pull debian:wheezy
wheezy: Pulling from debian
4c8cbfd2973e: Pull complete
60c52dbe9d91: Pull complete
Digest: sha256:c584131da2ac1948aa3e66468a4424b6aea2f33acba7cec0b631bdb56254c4fe
Status: Downloaded newer image for debian:wheezy
```

## Get and run a Shaarli image
### DockerHub repository
The images can be found in the [`shaarli/shaarli`](https://hub.docker.com/r/shaarli/shaarli/)[](.html)
repository.

### Available image tags
- `latest`: master branch (tarball release)
- `stable`: stable branch (tarball release)
- `dev`: master branch (Git clone)

All images rely on:
- [Debian 8 Jessie](https://hub.docker.com/_/debian/)[](.html)
- [PHP5-FPM](http://php-fpm.org/)[](.html)
- [Nginx](http://nginx.org/)[](.html)

### Download from DockerHub
```bash
$ docker pull shaarli/shaarli
latest: Pulling from shaarli/shaarli
32716d9fcddb: Pull complete
84899d045435: Pull complete
4b6ad7444763: Pull complete
e0345ef7a3e0: Pull complete
5c1dd344094f: Pull complete
6422305a200b: Pull complete
7d63f861dbef: Pull complete
3eb97210645c: Pull complete
869319d746ff: Already exists
869319d746ff: Pulling fs layer
902b87aaaec9: Already exists
Digest: sha256:f836b4627b958b3f83f59c332f22f02fcd495ace3056f2be2c4912bd8704cc98
Status: Downloaded newer image for shaarli/shaarli:latest
```

### Create and start a new container from the image
```bash
# map the host's :8000 port to the container's :80 port
$ docker create -p 8000:80 shaarli/shaarli
d40b7af693d678958adedfb88f87d6ea0237186c23de5c4102a55a8fcb499101

# launch the container in the background
$ docker start d40b7af693d678958adedfb88f87d6ea0237186c23de5c4102a55a8fcb499101
d40b7af693d678958adedfb88f87d6ea0237186c23de5c4102a55a8fcb499101

# list active containers
$ docker ps
CONTAINER ID  IMAGE            COMMAND               CREATED         STATUS        PORTS                 NAMES
d40b7af693d6  shaarli/shaarli  /usr/bin/supervisor  15 seconds ago  Up 4 seconds  0.0.0.0:8000->80/tcp  backstabbing_galileo
```

### Stop and destroy a container
```bash
$ docker stop backstabbing_galileo  # those docker guys are really rude to physicists!
backstabbing_galileo

# check the container is stopped
$ docker ps
CONTAINER ID  IMAGE            COMMAND               CREATED         STATUS        PORTS                 NAMES

# list ALL containers
$ docker ps -a
CONTAINER ID        IMAGE               COMMAND                CREATED             STATUS                      PORTS               NAMES
d40b7af693d6        shaarli/shaarli     /usr/bin/supervisor   5 minutes ago       Exited (0) 48 seconds ago                       backstabbing_galileo

# destroy the container
$ docker rm backstabbing_galileo  # let's put an end to these barbarian practices
backstabbing_galileo

$ docker ps -a
CONTAINER ID  IMAGE            COMMAND               CREATED         STATUS        PORTS                 NAMES
```

## Resources
### Docker
- [Where are Docker images stored?](http://blog.thoward37.me/articles/where-are-docker-images-stored/)[](.html)
- [Dockerfile reference](https://docs.docker.com/reference/builder/)[](.html)
- [Dockerfile best practices](https://docs.docker.com/articles/dockerfile_best-practices/)[](.html)
- [Volumes](https://docs.docker.com/userguide/dockervolumes/)[](.html)

### DockerHub
- [Repositories](https://docs.docker.com/userguide/dockerrepos/)[](.html)
- [Teams and organizations](https://docs.docker.com/docker-hub/orgs/)[](.html)
- [GitHub automated build](https://docs.docker.com/docker-hub/github/)[](.html)

### Service management
- [Using supervisord](https://docs.docker.com/articles/using_supervisord/)[](.html)
- [Nginx in the foreground](http://nginx.org/en/docs/ngx_core_module.html#daemon)[](.html)
- [supervisord](http://supervisord.org/)[](.html)