If anyone is interested in setting up their system to automatically (or manually) sign their git commits with their GPG key, here are the steps:

1. $ git config --global commit.gpgsign true ([OPTIONAL] every commit will now be signed)
2. $ git config --global user.signingkey ABCDEF01 (where ABCDEF01 is the fingerprint of the key to use)
3. $ git config --global alias.logs "log --show-signature" (now available as $ git logs)
4. $ git config --global alias.cis "commit -S" (optional if global signing is false)
5. $ echo "Some content" >> example.txt
6. $ git add example.txt
7. $ git cis -m "This commit is signed by a GPG key." (regular commit will work if global signing is enabled)
8. $ git logs

• https://youtrack.jetbrains.com/issue/IDEA-110261#comment=27-1388832
• https://github.com/blog/2144-gpg-signature-verification
• https://help.github.com/articles/signing-commits-using-gpg/
• https://unix.stackexchange.com/questions/48862/how-can-i-create-an-alias-for-a-git-action-command-which-includes-spaces
• https://mikegerwitz.com/papers/git-horror-story
• https://blog.erincall.com/p/signing-your-git-commits-with-gpg