Change bash to sh

[beardhatcode]

The R docker image I'm preparing, is based on alpine linux and doesn't come with a bash shell (alpine uses the ash shell).

Can #!/bin/bash be replaced with #!/bin/sh in main.sh and logger.sh? If not, I'll install the bash shell in the docker image (but I like to keep it as minimal as possible).
-- @jfmeys in #5

• Test all judges
  • anaconda3
  • bash
  • biopythia
  • haskell
  • java
  • nodejs
  • prolog
  • scratch

Original pull request by @beardhatcode on Thu Apr 05 2018 at 22:53.

[ninewise]

Haskell judge still works, but it doesn't have the logger script (the $(()) syntax is not POSIX iirc)

Original comment by @ninewise on Fri Apr 06 2018 at 09:52.

[ninewise]

Alpine uses busybox though, which also supports $(()), so everything should™ work.

Original comment by @ninewise on Fri Apr 06 2018 at 09:56.

[ninewise]

Java judge still works.

Original comment by @ninewise on Fri Apr 06 2018 at 10:03.

[beardhatcode]

Prolog judge also still works

Original comment by @beardhatcode on Mon Apr 09 2018 at 14:48.