Coder Images

This repo hold the Dockerfiles of our Coder images that will be used in an airtight environment.

Images

Golang

• 1.19.13
• 1.20.13
• 1.21.6

Node

• 18.19.0
• 20.11.0
• 21.6.1

Python

• 3.8.18
• 3.9.18
• 3.11.7
• 3.12.1

Dotnet

• 6.0.418
• 7.0.405
• 8.0.101

Archiving Issues

An issue ocurred when the first image arrived to the airtight environment. The golang executables were broken, printing a memory map and showing clear signs that the CLI is dead.

Possible Causes

• VM we archived the .tar file is not stable
• The VM has an old win-rar version installed while the PC in the airtight environment has the latest version of 7zip

Solution

The following steps were chosen to provide a working solution:

• Building the images on a reliable PC
• Archiving using 7zip as its proved more reliable than win-rar
• Layers to be uploaded to github

Image Life Cycle

Each Dockerfile was:

1. Built using docker build -t <image-name> -f <path-to-Dockerfile> . with connection to the www
2. Saved locally using docker save -o <image-name>.tar <image-name>:latest
3. Split into 100MB chunks using 7zip
4. Extracted using 7zip
5. Loaded into a sterile Docker Desktop instance using docker load -i <image-name>.tar
6. Executed using docker run <image-name>:latest for checking in the binary executables of the framework (golang as an example) is not corrupted