entrypoint.sh

#!/bin/sh
set -e

# Logging function
log() {
    echo "$(date +"%Y-%m-%d %T") - $1"
}

log "Generating new SSH host keys"
ssh-keygen -A -f /workspace

log "Ensuring ssh-user has a .ssh directory"
mkdir -p /home/ssh-user/.ssh

log "Adding files in workspace keys directory to the user's ssh authorized keys"

for keyfile in /workspace/keys/*; do
    if [ -f "${keyfile}" ]; then
        cat "${keyfile}" >> /home/ssh-user/.ssh/authorized_keys
        echo "" >> /home/ssh-user/.ssh/authorized_keys
        log "Authorized keys updated with ${keyfile}."
    else
        log "Key ${keyfile} is not a file."
    fi
done

log "Starting the SSH server in the foreground"
/usr/sbin/sshd -D -e