Update 0.1.2 +Docker Repository, on Raspberry Pi4, Usage

DevOps/Container/docker.md

@@ -1,12 +1,13 @@
 ---
 title: Docker
-linkTitle: Docker
 author: Christian Külker
-date: 2023-03-28
-version: 0.1.1
+date: 2024-02-19 
+version: 0.1.2
 type: doc
 disclaimer: True
 toc: True
+commands:
+- docker
 categories:
 - Container
 tags:
@@ -15,7 +16,7 @@ description: Docker
 
 ---
 
-## Docker
+## Introduction
 
 Docker is an open source software mechanism for building, shipping, and running
 applications. Docker allows you to separate your software applications from
@@ -26,47 +27,148 @@ for rapidly shipping, testing, and deploying code, Docker promises to
 significantly reduce the time between writing code and running it on a server
 in a production environment.
 
-Docker Engine can installed in different ways:
+Docker Engine can be installed in different ways:
 
 - Setup own Docker repository and install from them for the ease of
   installation and upgrade tasks. This is the recommended approach, except for
   Raspbian.
 - Download DEB packages and install them manually and manage upgrades
   completely manually.
-  This gives full cotrol on systems not connected to the internet.
+  This gives full control on systems not connected to the internet.
 - In testing and development environments scripts can install Docker in one
   shot. This is currently the most used approach for Raspbian.
 
-=> https://docs.docker.com/engine/install/debian/
+=> <https://docs.docker.com/engine/install/debian/>
 
-Membership in the docker group is more dangerous than sudo, according to the
-[Debian Wiki] (https://wiki.debian.org/Docker). This is due to the `setUID`
-root of the docker daemon and easy access to root. Access to docker commands
+Membership in the docker group is more dangerous than `sudo`, according to the
+[Debian Wiki](https://wiki.debian.org/Docker). This is due to the `setUID` root
+of the docker daemon and easy access to root. Access to docker commands
 therefore effectively grants root access. Therefore, do not add users to the
-docker group and use docker only with sudo.
+docker group and use docker only with `sudo`.
 
-### Editions
+## Editions
 
 Docker comes in editions.
 
 - ce: community edition
-  - edge: montly release
+  - edge: monthly release
   - stable: quarterly release
 - ee: enterprise edition
   - quarterly release
 
-### Debian 11 on ARM
+## Debian 11 on ARM
 
 The `docker.io` package contains the daemon and client. From the package
 description:
 
 > "Using docker.io on non-amd64 hosts is not supported at this time. Please be
 > careful when using it on anything besides amd64."
 
+## Docker Repository
+
+Docker is used through what is called a _Docker repository_. That is, you
+create a Docker repository before you install the Docker engine. After
+installation, this repository can be used to update Docker. __Warning:__
+Rasbian (or Debian for Arm?) users cannot use this method. Instead, they use a
+so-called ["convenience
+script"](https://docs.docker.com/engine/install/debian/#install-using-the-convenience-script),
+which can be obtained via a [link](https://get.docker.com/). This method has
+not been tested.
+
+## Docker on Raspberry Pi 4 Debian 11 Bullseye
+
+This works for Debian on `x86_64` / `amd64`, `armhf`, `arm64`, and `Raspbian`
+and is a _hello world_ example.
+
+```bash
+aptitude purge docker-ce docker-ce-cli containerd.io
+aptitude install docker docker.io containerd runc
+ # test docker installation
+docker run hello-world
+Unable to find image 'hello-world:latest' locally
+latest: Pulling from library/hello-world
+93288797bd35: Pull complete
+Digest: sha256:cc15c5b292d8525effc0f89cb299f1804f3a725c8d05e158653a563f15e4f685
+Status: Downloaded newer image for hello-world:latest
+
+Hello from Docker!
+This message shows that your installation appears to be working correctly.
+
+To generate this message, Docker took the following steps:
+ 1. The Docker client contacted the Docker daemon.
+ 2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
+    (arm64v8)
+ 3. The Docker daemon created a new container from that image which runs the
+    executable that produces the output you are currently reading.
+ 4. The Docker daemon streamed that output to the Docker client, which sent it
+    to your terminal.
+
+To try something more ambitious, you can run an Ubuntu container with:
+ $ docker run -it ubuntu bash
+
+Share images, automate workflows, and more with a free Docker ID:
+ https://hub.docker.com/
+
+For more examples and ideas, visit:
+ https://docs.docker.com/get-started/
+```
+
+As root
+
+```bash
+export U=userid
+aptitude install docker.io
+root@w2:~# touch /var/run/docker.sock
+root@w2:~# chown $U.$U /var/run/docker.so
+```
+
+As User
+
+```bash
+docker build --tag dh-venv-builder .
+[...] (some minutes later)
+Successfully built fba3ab967839
+Successfully tagged dh-venv-builder:latest
+
+docker run --rm dh-venv-builder tar -C /dpkg -c . | tar -C dist -xv
+./
+./dh-virtualenv_1.2.2-1~buster_all.deb
+./dh-virtualenv_1.2.2-1~buster_amd64.buildinfo
+./dh-virtualenv_1.2.2-1~buster_amd64.changes
+```
+
+### Virtual Environment
+
+```bash
+aptitude install dh-virtualenv
+```
+
+## Simple Docker Usage
+
+List all containers
+
+```bash
+docker container ls
+CONTAINER ID   IMAGE ...
+419f0ee92d82   ...
+```
+
+Enter a container
+
+```bash
+docker exec -i -t 419f0ee92d82 bash
+```
+
+Leave a container with a bash shell
+
+```bash
+exit
+```
+
 ## History
 
 | Version | Date       | Notes                                                |
 | ------- | ---------- | ---------------------------------------------------- |
+| 0.1.2   | 2024-02-19 | +Docker Repository, on Raspberry Pi4, Usage          |
 | 0.1.1   | 2023-03-28 | Improve writing, change cite format                  |
 | 0.1.0   | 2020-11-05 | Initial release                                      |
-