Docksal Support for Alpine Images

[mkochendorfer]

Right now fin seems to have a hard dependency on bash for many operations in the containers to function. This means that when running containers (like Alpine based images) you will run into many different issues with various fin commands. fin bash and fin exec being the 2 most obvious commands. There are work arounds for some of these things by falling back to docker-compose, but that limits the benefits of fin greatly. fin dc run <container> /bin/ash for example will get you to a shell in an Alpine based image.

node:10.15.0-alpine was the specific image I was testing with from https://hub.docker.com/_/node/ for reference.

[achekulaev]

Since there is no way to know which shell will be inside the container and using SH all the time is not an option, I can propose adding a feature, a parameter to exec - --shell giving ability to provide a shell binary

fin exec --in=mycontainer --shell=/bin/ash whatever

But I'm not sure if that will be convenient. This looks like a very long line. If I were in your shoes I would create a custom command to run ash or whatever you need in your custom containers.

.docksal/commands/ash

#!/bin/bash

## Runs ash shell with commands provided in <container>
##
## Usage: fin ash <command> [params]

fin dc run <container> /bin/ash -c "$@"

[mkochendorfer]

Yeah, that is a good thought in terms of approach

[achekulaev]

In the end what will happens is that exec will use sh by default so it will properly work for alpine images after the PR above is merged