Fix Bash Error in Docker

By  on  

I really enjoy working with Docker because it gives me more insight into creating and maintaining your own environments, mostly from scratch.  I instantly gained a greater appreciation for Ops engineers, package creators, and other engineers who work on low level software.  I think what I'm trying to say is that I've made a whole bunch of mistakes and completed an insane amount of Google searches for help.

One of the more basic errors I've recently encountered was trying to run a bash script within the container, only to get the following error:  env: can't execute 'bash': No such file or directory.  I was under the impression that bash was always a given in Linux machines, but apparently not in alpine images.  The fix was adding the following to my Dockerfile file:

RUN apk update && apk add bash

Or if you're in the machine, just run:

apk update && apk add bash

That command installs bash and your bash scripts should then work!

Recent Features

  • By
    An Interview with Eric Meyer

    Your early CSS books were instrumental in pushing my love for front end technologies. What was it about CSS that you fell in love with and drove you to write about it? At first blush, it was the simplicity of it as compared to the table-and-spacer...

  • By
    How to Create a RetroPie on Raspberry Pi – Graphical Guide

    Today we get to play amazing games on our super powered game consoles, PCs, VR headsets, and even mobile devices.  While I enjoy playing new games these days, I do long for the retro gaming systems I had when I was a kid: the original Nintendo...

Incredible Demos

  • By
    Create a Photo Stack Effect with Pure CSS Animations or MooTools

    My favorite technological piece of Google Plus is its image upload and display handling.  You can drag the images from your OS right into a browser's DIV element, the images upload right before your eyes, and the albums page displays a sexy photo deck animation...

  • By
    pointer Media Query

    As more devices emerge and differences in device interaction are implemented, the more important good CSS code will become.  In order to write good CSS, we need some indicator about device capabilities.  We've used CSS media queries thus far, with checks for max-width and pixel ratios.

Discussion

  1. Hamish

    Alternatively, you can use ash instead of bash.

    Not sure what the differences are, but I would expect parity on most standard features.

  2. If the script is simple you can use the default /bin/sh shell.

Wrap your code in <pre class="{language}"></pre> tags, link to a GitHub gist, JSFiddle fiddle, or CodePen pen to embed!