Conda Guide

Wed, 07 Jan 2026 09:18:13 +0800

Overview

This guide covers installing Conda on Ubuntu 22.04, migrating the Conda path to a data disk, configuring mirror sources (for regions with internet restrictions), and methods for packing environments for offline deployment.

Installation Package

Use wget or click to download the Installation Package directly.

Add Conda to PATH for Persistence

# Locate the conda command
which conda

# Check the conda root installation directory
conda info --base

# Open ~/.bashrc and add the following line at the bottom
export PATH="/home/ubuntu/miniconda3/bin:$PATH"

# Apply changes
source ~/.bashrc
conda init

# Restart your terminal session

Configure Storage Paths for Environments and Packages

# Open ~/.condarc and add the following lines:

envs_dirs:
  - /your/path/to/conda/envs
pkgs_dirs:
  - /your/path/to/conda/pkgs

Configure Conda Mirror Sources (China)

# Using Aliyun mirrors as an example
conda config --add channels https://mirrors.aliyun.com/anaconda/pkgs/main/
conda config --add channels https://mirrors.aliyun.com/anaconda/pkgs/free/
conda config --add channels https://mirrors.aliyun.com/anaconda/cloud/conda-forge/
conda config --add channels https://mirrors.aliyun.com/anaconda/cloud/bioconda/

# Verify the configuration
conda config --show channels

Create Conda Environments

# Create an environment (at a specific path or using the default path)
conda create --prefix /your/path/to/conda/envs/my_env python=3.12
conda create -n my_env python=3.12

# Activate the new environment
conda activate my_env

List Existing Environments

conda info --envs

Examples: Using pip/uv within Conda

# Using pip
pip install tqdm -i https://mirrors.aliyun.com/pypi/simple/

# Using uv for faster installation
uv pip install tqdm -i https://mirrors.aliyun.com/pypi/simple/

Pack Conda Environments

# Pack an existing conda environment:
# (Note: Requires conda-pack to be installed)
conda pack -n my_env

# Transfer the archive to the target server and extract it
tar -xvzf my_env.tar.gz -C /your/conda/envs/my_env

Dockerizing Local Conda Environments

Example Dockerfile:

Docker Guide

Wed, 07 Jan 2026 09:18:13 +0800

Overview

This guide provides a comprehensive walkthrough for installing Docker on Ubuntu 22.04, migrating the Docker root directory to a data disk, configuring registry mirrors (for regions with internet restrictions), and setting up the NVIDIA Container Toolkit for GPU acceleration.

1. Install Dependencies

sudo apt update && sudo apt install -y ca-certificates curl gnupg lsb-release

2. Import Docker GPG Key (Aliyun Mirror)

curl -fsSL https://mirrors.aliyun.com/docker-ce/linux/ubuntu/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/aliyun-docker.gpg

3. Register the Repository

echo \
  "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/aliyun-docker.gpg] https://mirrors.aliyun.com/docker-ce/linux/ubuntu \
  $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

4. Install Docker Engine

sudo apt update
sudo apt install -y docker-ce

# Docker starts automatically on Ubuntu. For WSL, use:
sudo service docker start

5. Verify Installation

sudo docker info

6. Manage Docker as a Non-Root User

# Create the docker group if it doesn't exist
sudo groupadd docker

# Add your user to the group
sudo usermod -aG docker $USER

# Apply group changes without logging out
newgrp docker

7. Operational Cheat Sheet

# List all containers (including stopped ones)
docker ps -a 

# List all local images
docker images

# Debug the Docker daemon (useful if the service fails to start)
dockerd 

# Retag an image
docker tag <image-name-1>:<tag-1> <image-name-2>:<tag-2> 

# Remove an image
docker rmi <image-id-or-name>

# Follow container logs (Ctrl+C to exit)
docker logs -f <container-id>

# Inspect container metadata
docker inspect <container-id>

# Force remove a container
docker rm -f <container-id>

8. Migrating the Docker Root Directory

To prevent the OS drive from filling up, migrate the storage path to a data disk:

General on 🌲Treetopia🌲

Conda Guide

Overview

Installation Package

Add Conda to PATH for Persistence

Configure Storage Paths for Environments and Packages

Configure Conda Mirror Sources (China)

Create Conda Environments

List Existing Environments

Examples: Using pip/uv within Conda

Pack Conda Environments

Dockerizing Local Conda Environments

Docker Guide

Overview

1. Install Dependencies

2. Import Docker GPG Key (Aliyun Mirror)

3. Register the Repository

4. Install Docker Engine

5. Verify Installation

6. Manage Docker as a Non-Root User

7. Operational Cheat Sheet

8. Migrating the Docker Root Directory