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https://github.com/adnanrahic/a-crash-course-on-docker
https://github.com/adnanrahic/a-crash-course-on-docker
Last synced: 7 days ago
JSON representation
- Host: GitHub
- URL: https://github.com/adnanrahic/a-crash-course-on-docker
- Owner: adnanrahic
- Created: 2018-01-20T14:53:32.000Z (almost 7 years ago)
- Default Branch: master
- Last Pushed: 2018-01-20T15:10:41.000Z (almost 7 years ago)
- Last Synced: 2024-10-27T17:05:26.619Z (about 2 months ago)
- Language: HTML
- Size: 1.95 KB
- Stars: 2
- Watchers: 3
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
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README
# A crash course on Docker
The quick start guide you are looking for.
You can take a look at the full article [here]() (issue #1, add article title once published).
## TL;DR
- "Why I need this?"
- Quick Start
- Real-life scenario
## "Why I need this?"
- What is Docker?
- What is a VM?
- What is CaaS?
- Using automation
## Quick Start
- Installation
**Ubuntu**
```bash
$ sudo apt-get update
$ sudo apt-get install -y docker-ce
$ sudo systemctl status docker
// output //
● docker.service - Docker Application Container Engine
Loaded: loaded (/lib/systemd/system/docker.service; enabled; vendor preset: enabled)
Active: active (running) since Sun 2018-01-14 12:42:17 CET; 4h 46min ago
Docs: https://docs.docker.com
Main PID: 2156 (dockerd)
Tasks: 26
Memory: 63.0M
CPU: 1min 57.541s
CGroup: /system.slice/docker.service
├─2156 /usr/bin/dockerd -H fd://
└─2204 docker-containerd --config /var/run/docker/containerd/containerd.toml
```
If the system service is stopped.
```bash
$ sudo systemctl start docker && sudo systemctl enable docker
```
Run Docker without **sudo**
```bash
$ sudo usermod -aG docker ${USER}
$ su - ${USER}
$ id -nG
```
If you see your username is the list of usernames, you're set.
**Mac**
Download and install.
- https://docs.docker.com/docker-for-mac/install/
**Windows**
Download and install.
- https://docs.docker.com/docker-for-windows/install/
- Create a container
```bash
$ docker create -it ubuntu:16.04 bash
```
- List all containers
```bash
$ docker ps -a
// output //
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
7643dba89904 ubuntu:16.04 "bash" X min ago Created name
```
- Start a container where in this case `7643dba89904` is the ``
```bash
$ docker start 7643dba89904
```
- List only running containers
```bash
$ docker ps
```
- Connect to a container
```bash
$ docker attach 7643dba89904
```
- Delete a container
```bash
$ docker rm 7643dba89904
```
## Real-life scenario
- Create a container and bind a volume to the host machine
- In this case it will bind the current working directory from the host machine where you run the command in the terminal
```bash
$ docker create -it -v $(pwd):/var/www ubuntu:latest bash
```
- Create and start a container with a single command
- `-d` flag tells the container to run detached, in the background, meaning you can go ahead and attach to it right away.
```bash
$ docker run -it -d ubuntu:16.04 bash
```
- Stop a running container
```bash
$ docker stop
```
### Using the config files
- Check out the **Dockerfile**, **docker-compose.yml**, and the **index.html**.
#### Build an image from a **Dockerfile**
```bash
$ docker build . -t webserver:v1
```
- List created Docker images
```bash
$ docker images
```
### Run the created image
```bash
$ docker run -v $(pwd):/usr/share/nginx/html -d -p 8080:80 webserver:v1
```
#### Run with docker-compose
- The `-d` signals docker-compose to run detached, then you can use `$ docker-compose ps` to see what’s currently running, or stop docker-compose with `$ docker-compose stop`.
```bash
$ docker-compose up (-d)
```
### Deleting images and containers
```bash
$ docker rmi
$ docker rm
```
Happy Dockering! :D