Create Lambda layer

gistfile1.txt

[Steps to create magic-dependencies-layer]

1. Launch an EC2 with Amazon Linux 2 OS.
2. SSH into EC2 instance.
    Let me share the commands I’ve used to create layer in this EC2 instance.
   > cd ~
   > mkdir magic
   > cd magic
   > mkdir lib # this directory must be called 'lib'

   # Since this EC2 instance already has libmagic.so dependencies(Unlike Lambda), We’ll just copy related dependencies to our layer file.
   > cp /usr/lib64/libmagic.so.1 lib
   > cp /usr/lib64/libmagic.so.1.0.0 lib
   > cp /usr/share/misc/magic .

   # At this point, the directory should look like
      ㄴ lib
           ㄴ libmagic.so.1
           ㄴ libmagic.so.1.0.0
      ㄴ magic

   # Create .zip file.
   > cd ~/magic/
   > zip -r lambda-layer.zip .