Here’s an example Dockerfile for a Debian-based image: RUN apt-get update & apt-get install -y openssh-server You’ll need to add the OpenSSH server yourself, even on images derived from popular operating system distriubtions. Most popular Docker base images are kept intentionally streamlined. ![]() Installing the SSH Server in a Docker Container It may also be used by some IDEs and build tools to provide live reload capabilities during development. You could introduce it as a stopgap measure to integrate with legacy deployment systems. While docker exec is the preferred approach, there are still scenarios where SSH might be useful. Use SSH to connect to your host, then run docker exec -it my-container bash to access individual containers. ![]() Instead of adding SSH to individual containers, install it once on the physical host that’s running Docker. On a system with several active containers, you’ll be running multiple independent SSH processes and will have to remember the correct port for each container. ![]() Aside from the multi-step configuration process, installing SSH in a Docker image adds several dependency packages and exposes another potential attack vector.
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