Networking DevOps Toolset

Me after 4 days:

Task:

On 2/9/2023, try to install Linux version of Docker Desktop 4.16.2 on Linux Mint Una 20.3, following these steps.

Obstacle:

Repository update command fails:

~$ sudo apt-get update …                                                         Err:13 https://download.docker.com/linux/ubuntu una Release                                              404  Not Found [IP: 2600:9000:234b:f400:3:db06:4200:93a1 443] Get:14 http://security.ubuntu.com/ubuntu focal-security InRelease [114 kB] Reading package lists... Done                                                                                            E: The repository 'https://download.docker.com/linux/ubuntu una Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details.

Package install command fails:

~$ sudo apt-get install ./Downloads/docker-desktop-4.16.2-amd64.deb Note, selecting 'docker-desktop' instead of './Downloads/docker-desktop-4.16.2-amd64.deb' Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: docker-desktop : Depends: docker-ce-cli but it is not installable E: Unable to correct problems, you have held broken packages.

Diagnosis:

The installation steps create a repository sources file /etc/apt/sources.list.d/docker.list that looks like this:

deb [arch=amd64 signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu una stable

"una" is the Linux Mint release name, but the Docker repository uses Ubuntu release names. The corresponding Ubuntu name should be "focal."

Resolution:

I changed the release name in the docker.list file from una to focal:

deb [arch=amd64 signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu focal stable

90% of the English-speaking job market in Berlin is just computer science hell, extremely important corporate jobs, or customer service call centers. Every time I apply for jobs within my skillset (I.E. Motion Design) I keep getting rejected.