[bash scripting] `contains_item` bash function. Check if an item is in an array

Problem If you are now using docker on a Mac M1 (arm64 platform), you don’t want to use amd64 as the architecture for your Linux Images. You could have 2 lines on your Dockerfile and comment each one depending on where you’re building the image Dockerfile # Building on Apple Silicon host FROM –platform=linux/arm64 ubuntu:20.04 […]