info/learnxinyminutes-docs
1
0
Fork 0
mirror of https://github.com/adambard/learnxinyminutes-docs.git synced 2025-08-18 20:41:29 +02:00
Code Issues Releases Wiki Activity

Improve wording/typos

Browse Source
This commit is contained in:
Marcel Ribeiro Dantas
2022-11-13 12:59:50 -03:00
committed by GitHub
parent f0577fb679
commit 5630c3e05a
1 changed files with 31 additions and 27 deletions
Download Patch File Download Diff File Expand all files Collapse all files

58
docker.html.markdown
View File

@@ -69,20 +69,20 @@ in a limited capacity architecture.
</pre> </pre>
Couple of terms we will encounter frequently are Docker Images and Docker Couple of terms we will encounter frequently are Docker Images and Docker
Containers. Images are packages or templates of containers all stored in the Containers. Images are packages or templates of containers all stored in a
[Docker Hub](https://hub.docker.com/). Containers are standalone, executable container registry such as [Docker Hub](https://hub.docker.com/). Containers
instances of these images which include code, runtime, system tools, system are standalone, executable instances of these images which include code,
libraries and settings - everything required to get the software up and running. runtime, system tools, system libraries and settings - everything required to
Coming to Docker, it follows a client-server architecture wherein the CLI client get the software up and running. Coming to Docker, it follows a client-server
communicates with the server component, which here is, the Docker Engine using architecture wherein the CLI client communicates with the server component,
RESTful API to issue commands. which here is, the Docker Engine using RESTful API to issue commands.
## The Docker CLI ## The Docker CLI
```bash ```bash
# after installing Docker from https://docs.docker.com/get-docker/ # after installing Docker from https://docs.docker.com/get-docker/
# To list available commands, either run `docker` with no parameters or execute # To list available commands, either run `docker` with no parameters or execute
# `docker help` # `docker help`
$docker $ docker
>>> docker [OPTIONS] COMMAND [ARG...] >>> docker [OPTIONS] COMMAND [ARG...]
docker [ --help | -v | --version ] docker [ --help | -v | --version ]
@@ -107,15 +107,15 @@ $docker
attach Attach to a running container attach Attach to a running container
# […] # […]
$docker run hello-world $ docker run hello-world
# `docker run <container-name>` is used to run a container, it will pull the # `docker run <container-name>` is used to run a container, it will pull the
# images from Docker Hub if they don't alrady exist on your system. Here the # images from Docker Hub if they don't already exist in your system. Here the
# docker client connects to the daemon which in turn pulls the "hello-world" # docker client connects to the daemon which in turn pulls the "hello-world"
# image from the Docker Hub. The daemon then creates a new container from the # image from the Docker Hub. The daemon then builds a new container from the
# image which runs the executable that produces the output streamed back to the # image which runs the executable that produces the output streamed back to the
# client that we see on our terminals. # client that we see on our terminals.
$docker run -d ubuntu sleep 60s $ docker run -d ubuntu sleep 60s
# The -d (or --detach) flag is when we want to run a container in the background # The -d (or --detach) flag is when we want to run a container in the background
# and return back to the terminal. Here we detach an ubuntu container from the # and return back to the terminal. Here we detach an ubuntu container from the
# terminal, the output should be the id and the command exits. If we check # terminal, the output should be the id and the command exits. If we check
@@ -123,19 +123,21 @@ $docker run -d ubuntu sleep 60s
# CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES # CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
# 133261b4894a ubuntu "sleep 60s" 3 seconds ago Up 2 seconds vigorous_gould # 133261b4894a ubuntu "sleep 60s" 3 seconds ago Up 2 seconds vigorous_gould
$docker run <container-id> -p 3000:8000 $ docker run <container-id> -p 3000:8000
# The -p (or --publish) flag is used to expose port 8000 inside the container to # The -p (or --publish) flag is used to expose port 8000 inside the container to
# port 3000 outside the container. This is because the app inside the container # port 3000 outside the container. This is because the app inside the container
# runs in isolation, hence the port 8000 where the app runs is private to the # runs in isolation, hence the port 8000 where the app runs is private to the
# container. # container.
$docker run -i or $docker run -it $ docker run -i
# or
$ docker run -it
# Docker runs our containers in a non-interactive mode i.e. they do not accept # Docker runs our containers in a non-interactive mode i.e. they do not accept
# inputs or work dynamically while running. The -i flag keeps input open to the # inputs or work dynamically while running. The -i flag keeps input open to the
# container, and the -t flag creates a pseudo-terminal that the shell can attach # container, and the -t flag creates a pseudo-terminal that the shell can attach
# to (can be combined as -it) # to (can be combined as -it)
$docker ps -a $ docker ps -a
# The `docker ps` command only shows running containers by default. To see all # The `docker ps` command only shows running containers by default. To see all
# containers, use the -a (or --all) flag # containers, use the -a (or --all) flag
# Running the above command should output something similar in the terminal: # Running the above command should output something similar in the terminal:
@@ -143,12 +145,14 @@ $docker ps -a
# 82f84bf6912b hello-world "/hello" 9 minutes ago Exited (0) 9 minutes ago eloquent_sammet # 82f84bf6912b hello-world "/hello" 9 minutes ago Exited (0) 9 minutes ago eloquent_sammet
$docker start hello-world or $docker stop hello-world $ docker stop hello-world
# The stop command simply stops one or more containers, the start command starts # or
# the conatainer(s) up again! `docker start -a ubuntu` will attach our detached $ docker start hello-world
# container back to the terminal i.e. runs in the foreground # The stop command simply stops one or more containers, and the start command
# starts the container(s) up again! `docker start -a ubuntu` will attach our
# detached container back to the terminal i.e. runs in the foreground
$docker create alpine $ docker create alpine
# `docker create` creates a new container for us with the image specified (here, # `docker create` creates a new container for us with the image specified (here,
# alpine), the container does not auto-start unlike `docker run`. This command # alpine), the container does not auto-start unlike `docker run`. This command
# is used to set up a container configuration and then `docker start` to shoot # is used to set up a container configuration and then `docker start` to shoot
@@ -156,12 +160,12 @@ $docker create alpine
# CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES # CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
# 4c71c727c73d alpine "/bin/sh" 29 seconds ago Created naughty_ritchie # 4c71c727c73d alpine "/bin/sh" 29 seconds ago Created naughty_ritchie
$docker rm 82f84 $ docker rm 82f84
# Removes one or more containers using their container ID. # Removes one or more containers using their container ID.
# P.S.: we can use only the first few characters of the entire ID to identify # P.S.: we can use only the first few characters of the entire ID to identify
# containers # containers
$docker images $ docker images
# Displays all images and their information, created here means the latest image # Displays all images and their information, created here means the latest image
# tag updated on Docker Hub: # tag updated on Docker Hub:
# REPOSITORY TAG IMAGE ID CREATED SIZE # REPOSITORY TAG IMAGE ID CREATED SIZE
@@ -169,21 +173,21 @@ $docker images
# alpine latest 9c6f07244728 3 months ago 5.54MB # alpine latest 9c6f07244728 3 months ago 5.54MB
# hello-world latest feb5d9fea6a5 13 months ago 13.3kB # hello-world latest feb5d9fea6a5 13 months ago 13.3kB
$docker rmi $ docker rmi
# Removes one or more images from your system which do not have their instances # Removes one or more images from your system which do not have their instances
# (or containers as we know them) running. If the image has an attached # (or containers as we know them) running. If the image has an attached
# container, either delete the container first or use the -f (or --force) flag # container, either delete the container first or use the -f (or --force) flag
# to forcefully delete both the container and image. # to forcefully delete both the container and image.
$docker pull busybox $ docker pull busybox
# The pull command downloads the specified image on our system from Docker Hub. # The pull command downloads the specified image on our system from Docker Hub.
$docker exec -it 7b272 bash $ docker exec -it 7b272 bash
# This command is used to run a command in the running container's default # This command is used to run a command in the running container's default
# directory. Here 7b272 was our ubuntu container and the above command would # directory. Here 7b272 was our ubuntu container and the above command would
# help us interact with the container by opening a bash session # help us interact with the container by opening a bash session.
$docker compose $ docker compose
# More commands can be found at https://docs.docker.com/engine/reference/commandline/docker/ # More commands can be found at https://docs.docker.com/engine/reference/commandline/docker/
``` ```