Docker Basic Setup: Difference between revisions

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== Install Docker Compose ==
== Install Docker Compose ==
More information at [https://docs.docker.com/compose/gettingstarted/ Get started with Docker Compose].<syntaxhighlight lang="bash" class="mlw-continue">
More information at [https://docs.docker.com/compose/gettingstarted/ Get started with Docker Compose].<syntaxhighlight lang="bash" class="code-continue">
# docker-compose from github.com/docker/compose#where-to-get-docker-compose
# docker-compose from github.com/docker/compose#where-to-get-docker-compose
</syntaxhighlight>
</syntaxhighlight>
<syntaxhighlight lang="shell" line="1" class="mlw-continue">
<syntaxhighlight lang="shell" line="1" class="code-continue">
sudo curl -L --fail \
sudo curl -L --fail \
https://github.com/docker/compose/releases/download/v2.5.0/docker-compose-linux-x86_64 \
https://github.com/docker/compose/releases/download/v2.5.0/docker-compose-linux-x86_64 \
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Alternatively, for example, one can use [https://docs.linuxserver.io/general/docker-compose Docker-compose provided by Linuxserver.io].
Alternatively, for example, one can use [https://docs.linuxserver.io/general/docker-compose Docker-compose provided by Linuxserver.io].
{{collapse/div|#CLI}}
{{collapse/div|#CLI}}
<syntaxhighlight lang="bash" class="mlw-continue">
<syntaxhighlight lang="bash" class="code-continue">
# docker-compose from linuxserver.io
# docker-compose from linuxserver.io
</syntaxhighlight>
</syntaxhighlight>
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=== Prune All ===
=== Prune All ===
Simple script that will prune all Docker ''containers'' and ''images'' that are not in use. If you want to use it, add the script somewhere in your <code>$PATH</code> to be accessible as shell command and make it executable.
Simple script that will prune all Docker ''containers'' and ''images'' that are not in use. If you want to use it, add the script somewhere in your <code>$PATH</code> to be accessible as shell command and make it executable.
<syntaxhighlight lang="shell" class="mlw-continue" line="1">
<syntaxhighlight lang="shell" class="code-continue" line="1">
sudo nano /usr/local/bin/docker-prune.sh && sudo chmod +x /usr/local/bin/docker-prune.sh
sudo nano /usr/local/bin/docker-prune.sh && sudo chmod +x /usr/local/bin/docker-prune.sh
</syntaxhighlight>
</syntaxhighlight>
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docker images prune
docker images prune
docker system prune
docker system prune
</syntaxhighlight><syntaxhighlight lang="shell" class="mlw-continue" line="1">
</syntaxhighlight><syntaxhighlight lang="shell" class="code-continue" line="1">
docker volume rm $(docker volume ls -qf dangling=true)
docker volume rm $(docker volume ls -qf dangling=true)
</syntaxhighlight>
</syntaxhighlight>
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=== Force update existing images with docker-compose ===
=== Force update existing images with docker-compose ===
<syntaxhighlight lang="shell" class="mlw-continue">
<syntaxhighlight lang="shell" class="code-continue">
docker-compose up --force-recreate --build -d
docker-compose up --force-recreate --build -d
docker image prune -f
docker image prune -f

Revision as of 07:28, 26 September 2022

Lin­ux Serv­er
Con­tain­ers
De­vOps and SRE

In­stall Dock­er

In­stall Dock­er on Ubun­tu and oth­er De­bian based dis­tros.

sudo apt install docker.io curl

sudo usermod -aG docker "$USER"

Ref­er­ences:

In­stall Dock­er Com­pose

More in­for­ma­tion at Get start­ed with Dock­er Com­pose.

# docker-compose from github.com/docker/compose#where-to-get-docker-compose

sudo curl -L --fail \
https://github.com/docker/compose/releases/download/v2.5.0/docker-compose-linux-x86_64 \
-o /usr/local/bin/docker-compose

sudo chmod +x /usr/local/bin/docker-compose

Al­ter­na­tive­ly, for ex­am­ple, one can use Dock­er-com­pose pro­vid­ed by Linuxserver​.io.

#CLI
# docker-compose from linuxserver.io

sudo curl -L --fail \
https://raw.githubusercontent.com/linuxserver/docker-docker-compose/master/run.sh \
-o /usr/local/bin/docker-compose && \
sudo chmod +x /usr/local/bin/docker-compose

Ba­sics Ex­am­ple

Here is a GitHub repos­i­to­ry that il­lus­trates at very ba­sic lev­el how to use Dock­er­file and docler-compose.yaml to de­ploy a Node.js ap­pli­ca­tion.

Mis­cel­la­neous

Prune All

Sim­ple script that will prune all Dock­er con­tain­ers and im­ages that are not in use. If you want to use it, add the script some­where in your $PATH to be ac­ces­si­ble as shell com­mand and make it ex­e­cutable. 

sudo nano /usr/local/bin/docker-prune.sh && sudo chmod +x /usr/local/bin/docker-prune.sh

#!/bin/bash
docker image prune -a
docker container prune
docker images prune
docker system prune

docker volume rm $(docker volume ls -qf dangling=true)

Force up­date ex­ist­ing im­ages with dock­er-com­pose

docker-compose up --force-recreate --build -d
docker image prune -f

Log-in to a Dock­er Con­tain­er

docker exec -it container(id|name) /bin/bash

Gen­er­ate Hashed Pass­word for Code-serv­er

printf 'your-password' | npx argon2-cli -e | sed 's/\$/$$/g'

De­mo App from Nana's Dock­er Tu­to­r­i­al for Be­gin­ners


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