Docker SFTP Server with SSH Key

This repository contains the necessary files to deploy a secure SFTP server using Docker. The setup includes volume mounting for persistent storage, key-based authentication for enhanced security, and customizable SSH configurations.

Table of Contents

• Prerequisites
• Quick Start
  • SSH Key Configuration
  • Clone this repository
  • Build the Docker image
  • Run the Docker container
  • Connecting to the SFTP Server
• Conclusion
• License

🎬 Video demonstration

Prerequisites

• Docker installed on your machine.
• Basic understanding of Docker and SFTP.
• Git is also required to clone the repository.
• Basic knowledge of command-line operations.

Quick Start

SSH Key Configuration

Generate SSH Key: If you do not already have an SSH key pair, you can generate one using the following command:

ssh-keygen -t rsa -b 4096 -C "[email protected]" -f $HOME/.ssh/docker_rsa

Ensure your private key (~/.ssh/docker_rsa) is kept secure with the appropriate permissions:

chmod 600 ~/.ssh/docker_rsa

Load your SSH key into the SSH agent by running:

ssh-add ~/.ssh/docker_rsa

Clone this repository:

git clone https://github.com/tshenolo/docker-sftp-server-with-sshkey.git

Change your current working directory to the newly cloned repository:

cd docker-sftp-server-with-sshkey

To ensure SSH key-based authentication for your SFTP server, place your SSH public key into the working directory:

cp $HOME/.ssh/docker_rsa.pub .

Build the Docker image:

docker build -t my-sftp-server .

Run the Docker container:

To run your SFTP server container without data persistence, you might use a command like this:

docker run -d --name my_sftp_container -p 2222:22 my-sftp-server

To ensure that uploaded files are not lost when the container stops or is removed, you should persist data by mapping a directory from your host machine to a directory inside the container

docker run -d -v /local/sftp/upload:/home/sftpuser/sftp/upload --name my_sftp_container -p 2222:22 my-sftp-server

Connecting to the SFTP Server

Connect to your SFTP server using:

sftp -oPort=2222 sftpuser@localhost

Conclusion

This project simplifies the deployment of a secure SFTP server using Docker. By leveraging Docker's capabilities, you can ensure data persistence, enhance security, and customize configurations to suit your needs.

License

This project is licensed under the MIT License - see the LICENSE file for details.

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