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docker [2022/10/04 03:46] – [Docker.Learning] admindocker [2025/04/22 03:05] (current) – [Docker.goodPackages] admin
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 ===== Docker ===== ===== Docker =====
 +https://github.com/docker/labs/tree/master/networking/concepts https://sysdig.com/blog/dockerfile-best-practices/ \\
 +dns https://kerneltalks.com/networking/how-docker-container-dns-works/ \\
 +https://labs.play-with-docker.com/ \\
 <code BASH> <code BASH>
 docker -D info docker -D info
 +docker compose --ansi=never up --quiet-pull
 </code> </code>
  
 +===== Docker.goodPackages =====
 +  * [[https://github.com/linuxserver|linuxserver]], [[https://github.com/hotio|hotio]], and [[https://github.com/binhex?tab=repositories|binhex]]    - packages [[https://www.reddit.com/r/unRAID/comments/18fcq05/binhex_who/|reddit]]
 +  * updates and good packages https://blog.bozdaganian.com/2020/12/12/watchtower-to-monitor-docker-image-updates/#2
 +  * unusual way https://www.youtube.com/watch?v=zfNqp85g5JM
 +  * https://github.com/docker/awesome-compose
 +
 +==== docker utils ====
 +  * utils lazy docker/dive/watchtower 2025 <https://www.youtube.com/watch?v=Rmly6m1kuBw>
 +
 +
 +
 +===== Docker.scout  =====
 +  * scout - security scan
 +
 +===== Docker.dedockify  =====
 +
 +  * dedockify https://github.com/mrhavens/Dedockify
 ==== Docker.Learning ==== ==== Docker.Learning ====
   * https://dockerlabs.collabnix.com/ - learning   * https://dockerlabs.collabnix.com/ - learning
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 # docker find by name # docker find by name
 docker ps -a --format "{{.ID}} {{.Names}}" --filter name=UismvProd_Db docker ps -a --format "{{.ID}} {{.Names}}" --filter name=UismvProd_Db
 +
 +# docker find thin r/w layer aufs by container id - ``docker ps`` 
 +cat /var/lib/docker/image/aufs/layerdb/mounts/<CONTAINERID>*/mount-id
 +<ID>
 +# real files in -> /var/lib/docker/aufs/diff/<ID>    <ID>-init - entry point  of container aufs start
 +
 +# find container by name of catalog AUFS DIFF
 +grep 09c1f3c8c5adfb9241d477a61b5b04fd4cde07959dbee5ad385c4ef9c5e9d71d /var/lib/docker/image/aufs/layerdb/mounts/*/mount-id
 +<RESULT>
 +# this give id in path -> /var/lib/docker/aufs/diff/<RESULT>/etc/freeradius/
 +
  
 # inspecting docker with jq - mounts # inspecting docker with jq - mounts
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 docker-reception_pma_1                            63.4kB (virtual 89.7MB)                       0.0.0.0:8081->8080/tcp                                         Up 2 months docker-reception_pma_1                            63.4kB (virtual 89.7MB)                       0.0.0.0:8081->8080/tcp                                         Up 2 months
 docker-reception_nginx_1                          2B (virtual 126MB)                            0.0.0.0:80->80/tcp, 0.0.0.0:443->443/tcp                       Up 3 months docker-reception_nginx_1                          2B (virtual 126MB)                            0.0.0.0:80->80/tcp, 0.0.0.0:443->443/tcp                       Up 3 months
 +</code>
 +
 +
 +=== Docker. determining container responsible for largest overlay directories  ===
 +<code BASH>
 +# huge containers overlay container size
 +# as root $ sudo su     # make sure json parser is installed  $ apt-get install jq -y 
 +
 +# grab the size and path to the largest overlay dir
 +du /var/lib/docker/overlay2 -h | sort -h | tail -n 100 | grep -vE "overlay2$" > /tmp/large-overlay.txt
 +
 +# construct mappings of name to hash
 +docker inspect $(docker ps -qa) | jq -r 'map([.Name, .GraphDriver.Data.MergedDir]) | .[] | "\(.[0])\t\(.[1])"' > /tmp/docker-mappings.txt
 +
 +# for each hashed path, find matching container name
 +cat /tmp/large-overlay.txt | xargs -l bash -c 'if grep $1 /tmp/docker-mappings.txt; then echo -n "$0 "; fi'
 </code> </code>
 ==== Docker BuildKit==== ==== Docker BuildKit====
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 +===== Docker baseimage to ease creation of X graphical application containers GUI=====
 +  * https://github.com/jlesage/docker-baseimage-gui
 ===== Docker Network ===== ===== Docker Network =====
   * https://www.youtube.com/watch?v=bKFMS5C4CG0   * https://www.youtube.com/watch?v=bKFMS5C4CG0
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