SSH Server

Simple image of an SSH server built on top of Oracle Linux distribution.

Single user, single group, no complex parametrization.

WARNING

This server has a simple ssh configuration. Make sure you configure it properly before using it.

Configuration

Set up options by modifying config/.env

SSH Options

SSH_USER: ssh user name (string)
SSH_UID: ssh user identifier (integer)
SSH_GROUP: ssh user group (string)
SSH_GID: ssh user group identifier (integer)
SSH_PORT: ssh port mapped on host (integer)

Image Options

SSH_IMG: image name (string)
SSH_BASE_IMG: base image (string)
SSH_USE_CACHE: enable/disable build cache (boolean)

Building container image

Build the container by running the build.sh script from build directory.

Build directory contains the following files:

build.sh: build script
Dockerfile: docker build script
startup.sh: the entrypoint, setting up file permissions before running ssh. This is especially useful on Windows hosts

Running container

The compose directory contains:

docker-compose.yml: docker compose deployment script
up.sh: deployment script (accepting arguments)
down.sh: container stop script (accepting arguments)

To deploy container, you first need to create an authorized_keys file in compose folder. Then, run the up.sh:

cd compose

# Setup authorized keys for $SSH_USER
cat ~/.ssh/id_rsa.pub > authorized_keys

# Run SSH server in detached state
./up.sh -d

# Log into ssh server
source ../config/.env
ssh $SSH_USER@localhost -p$SSH_PORT

To stop container, simply run the down.sh script: