install.sh: set: line 2: illegal option -

[susaboyyy]

i always failed when trying to build my docker image on my windows 11

here's my screen shoot:

i already copied the script [install.sh](https://github.com/cosmtrek/air/blob/master/install.sh)

here's my docker file:

anyone experienced this before?
thank you

[susaboyyy]

SOLUTION
i finally found out the solution by typing this command sed -i 's/\r$//' filename

reference:
https://www.programmersought.com/article/73282501170/