====== Docker ======

===== Cheat Sheet =====

^Command^Description^
^docker search ubuntu|List of ubuntu images|
^docker container ls|List containers that are running|
^docker container ls -a|List all containers, running or not|
^docker create|Create a local image|
^docker create --name=foo -it ubuntu bash|-i = interactive\\ -t = pseudo TTY\\ running bash when starting|
^docker start foo | Start container running|
^docker attach foo|Attach Standard In/Out to container\\ escape with Control-P Control-Q|
^Control-p Control-q|Escapes from docker attach|
^docker logs foo|Shows the standard in/out from container that has run in the background|
^docker image ls|List all images that are present/cached|
^docker rm foo|Remove container|
^docker inspect foo|Inspect container - shows network|
^docker network ls|Shows networks|
^docker run <image> <command>|Load and run a container|
^docker search <image>|Search for image in docker repository|
^docker build . -t serve_image |Build a docker image from a Dockerfile in the current directory|
^docker run -p 3001:3000 --name=serve_container serve_image|Run the image, mapping the internal port 3000 from "serve" to the parent host 3001, running serve_Image in a new container called "serve_container"|




===== Troubleshooting =====

==== network is unreachable ====

when trying to run
<code bash>
docker run hello-world
</code>

Kept getting:

<code>
connect: network is unreachable
</code>

Solved problem by changing /etc/resolv.conf to
<code>
nameserver 8.8.8.8
</code>

Perhaps the usual 192.168.0.1 nameserver can't properly handle the docker registry server. Which is:

<code text>
https://registry-1.docker.io/v2/library/hello-world/manifests/sha256:ac69084025c660510933cca701f615283cdbb3aa0963188770b54c31c8962493
</code>



[12/26/2023]