https://github.com/harshkapadia2/docker
Resources and commands for Docker.
https://github.com/harshkapadia2/docker
docker
Last synced: 12 months ago
JSON representation
Resources and commands for Docker.
- Host: GitHub
- URL: https://github.com/harshkapadia2/docker
- Owner: HarshKapadia2
- License: mit
- Created: 2020-12-07T16:18:47.000Z (over 5 years ago)
- Default Branch: main
- Last Pushed: 2023-06-18T01:23:53.000Z (about 3 years ago)
- Last Synced: 2025-03-31T23:39:13.717Z (over 1 year ago)
- Topics: docker
- Language: HTML
- Homepage: https://harshkapadia2.github.io/docker
- Size: 30.3 KB
- Stars: 6
- Watchers: 1
- Forks: 1
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# Docker
## Table of Contents
- [Introduction](#introduction)
- [Linux and Networking](#linux-and-networking)
- [Commands](#commands)
- [Miscellaneous Commands](#miscellaneous-commands)
- [Images](#images)
- [Containers](#containers)
- [Bind Mount](#bind-mount)
- [Resources](#resources)
## Introduction
- Crash course
- [Exploring Docker [1] - Getting Started](https://www.youtube.com/watch?v=Kyx2PsuwomE)
- [Exploring Docker [2] - Docker Compose With Node & MongoDB](https://www.youtube.com/watch?v=hP77Rua1E0c)
- [Docker in 100 secs](https://www.youtube.com/watch?v=Gjnup-PuquQ)
- Aim: To run software services/progs/applications inside containers.
- Eg: Apache, MySQL, MongoDB, NginX (web server common to Apache), Wordpress, etc...
- Advantages: Convenient, fast, simple, easy to re-create the same environment.
- [Docker Hub](https://hub.docker.com) == GitHub of Docker
> NOTE:
>
> - [Docker Desktop for Windows Home is here!](https://www.docker.com/blog/docker-desktop-for-windows-home-is-here)
> - For Win 10 Home (2004 and above), Pro and Enterprise, install Docker Desktop.
> - For Win 10 Home 1909 and lower, install Docker Toolkit.
> - Docker might not work on VSCode integrated terminal. In that case, open VSCode as an administrator, use ext cmd or use powershell.
> - Some commands might not work in cmd. Use Powershell in that case.
> - [`$(pwd)` in MacOS is `$(%cd%)` in Cmd and `${PWD}` in Powershell](https://stackoverflow.com/questions/41485217/mount-current-directory-as-a-volume-in-docker-on-windows-10)
> - `localhost:port` might not work. Use `198.168.99.100:port` instead.
> - Container privileges
> - [Network privileges might be required sometimes](https://unix.stackexchange.com/questions/459206/list-ip-tables-in-docker-container)
> - [All privileges](https://stackoverflow.com/questions/36425230/privileged-containers-and-capabilities)
## Linux and Networking
Please refer to [linux-networking.md](linux-networking.md).
## Commands
### Miscellaneous Commands
- `docker version`
- Server: Docker Engine (built on Go lang)
- `docker info`
### Images
- To view images on local machine: `docker images`
- To remove images: `docker image rm ed2` (the entire image ID is not required)
- To pull image from DockerHub: `docker pull nginx`
- To build image
- `docker image build -t harshkapadia/nginx-website .`
- `harshkapadia/nginx-website` = Docker_ID/img_name
- `.` = refering to Dockerfile in currect dir (make sure your cmd is pointing to the correct folder)
- To push image to DockerHub: `docker push harshkapadia/nginx-website`
### Containers
- To show running containers
- `docker container ls`
- `docker container ps`
- `docker ps`
- To show all containers on the system
- `docker container ls -a`
- `docker ps -a`
- To run container in the foreground
- `docker container run -it -p 80:80 --name my_custom_name_for_nginx nginx`
- `container` = management command
- `run` = sub-command
- `it` = interactive terminal, ie, run in the foreground
- `-p` or `--publish` = publish
- `80:80` = mapping ports (port*to_be_used_on_local_machine*(use*any_port):port_exposed_from_container*- (use_default_port_of_service_in_container))
- `nginx` = image name
- Once the img is downloaded:
- `localhost:80` or `localhost` (default is 80) or `127.0.0.1` (localhost)
- Win 10 Home users (might not be needed with Docker Desktop): `192.168.99.100` (Since Toolbox is running a Linux VM in VirtualBox, localhost won't work. Use `192.168.99.100` (default) instead.)
- To stop container: ctrl + c
- To run container in the background:
- `docker container run -d -p 8080:80 --name my_custom_name_for_nginx nginx`
- `-d` or `--detach` = detached
- To stop container: `docker stop my_custom_name_for_nginx` or `docker container stop my_custom_name_for_nginx`
- To view:
`192.168.99.100:8080` (Win 10 Home users - might not be needed with Docker Desktop - `localhost` might work)
- To remove container: `docker container rm c699` (the entire container ID is not required) (deleting container does not remove the image from the system)
- To remove running container:
- First stop the container and use the remove command
- OR use force: `docker container rm c699 -f`
- To remove all containers on the system: `docker rm $(docker ps -aq) -f` (`-f` added to remove any running container(s) as well) (this ran in powershell, but not in cmd)
- Env variables: `docker container run -d -p 3306:3306 --name my_sql_user --env MYSQL_ROOT_PASSWORD=123456 mysql` (you can find the env vars on Docker Hub)
- To start a new container from an existing image: `docker container run -d -p 80:80 --name custom_name_nginx nginx`
- To start an existing container: `docker start `
- To enter a container: `docker container exec -it mynginx bash` (start the container using the abv cmd before doing this)
- After entering:
- To view file system: `ls`
- To get to index.html (displayed on screen at port) (for nginx): `cd usr/share/nginx/html`
- To come out of container: `exit`
- To edit file, refer to the bind mount section below.
### Bind Mount
> NOTE: Ports 80 or 8081 might not work with below example. Use 8080, 8082, 8083...
- To create container:
- With Docker Toolbox:
- Refer to [`bind_mount.md`](bind_mount.md) for further details on 'x_drive'.
- Make sure docker-machine is running (`docker-machine start`)
- `docker container run -d -p 8080:80 -v /x_drive/coding/docker/docker_basics/mounting_example:/usr/share/nginx/html --name - nginx-website nginx`
- Refer to files in the [`mounting_example`](mounting_example) folder.
- With Docker Desktop:
`docker container run -it -v "%cd%":/mnt --name kali kalilinux/kali-rolling`
## Resources
- [Understanding Docker layers](https://devops.stackexchange.com/questions/1750/understanding-docker-layers)
- [Networking in a Linux Container in Docker](linux-networking.md)
- [Linux file system](https://gist.github.com/HarshKapadia2/18150e1e57eab1f0e500f18feea890aa)
- [Linux Terminal commands](https://harshkapadia2.github.io/cli)
- [Windows Subsystem for Linux](https://gist.github.com/HarshKapadia2/714bba15f0f09d32c07cdde3c244be9f) (WSL)
- [Windows Terminal](https://gist.github.com/HarshKapadia2/18daf23ab4a7d1cb9215ca9dc8b7099f) (WT)