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VS Code Server with Miniconda 3

A docker build of vs code server with Miniconda 3 and two factor authentication.

Building the image

Once you have docker installed, simply build this image:

docker build -t code-server-miniconda3:latest .

Set up for two factor authentication

The two factor authentication requires a key to generate time-based code in addition to a password. Both of these secrets must be present for the code-server to start. Below is an example of the ~/.config/code-server/config.yaml

bind-addr: 127.0.0.1:8001
auth: password
password: arandomstringof123andabc
tfa: randomshafromgenjs
cert: false

If you don't already have a two FA secret, do the following:

  1. generate a secret two factor key using gen.js (you may need to install node-2fa and qr-code, see below)
sudo apt-get update -q && sudo apt-get install -y npm nodejs \
    && sudo apt-get clean \
    && rm -rf /var/lib/apt/lists/*
npm install node-2fa \
    && npm install qrcode
node gen.js
  1. add the secret to config.yaml tfa.

Disable two factor authentication

To disable two factor, comment out the block of code from Line 78 to 92 in Dockerfile, and also remove tfa from config.yaml.

Using the image

Starting the server using the same config as the base code-server:

sudo mkdir -p $HOME/coder/.config/code-server
sudo chmod 777 -R $HOME/coder/.config
docker run -it --rm --name code-server -p 0.0.0.0:8888:8080 \
  -v "$HOME/coder/.config:/home/coder/.config" \
  -v "$PWD:/home/coder/project" \
  -u "$(id -u):$(id -g)" \
  -e "DOCKER_USER=$USER" \
  code-server-miniconda3:latest

Entering password and two auth code

Since vs code server does not support two FA out of the box, the build from this repo modifies the back end of login.js to add a set of new conditions to check for two factor code using node-2fa. To use two FA at login, append the 6 numeric digit time-based two factor code after your password. For example, if your password is mypassword123abc, and at the time of login, your two factor code is 111111, the full password that you need to enter at login would be mypassword123abc111111.

Maintaining your code server

Persisting environment

In order to persist your conda environments between docker containers, you may want to copy the latest miniconda folder from the image within the home/coder/conda folder into your local and mount it. You can follow the same method to upgrade your environment to a newer conda version:

docker create --name dummy IMAGE_NAME
docker cp dummy:/path/to/file /dest/to/file
docker rm -f dummy

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