Ruby: Apple/macOS: save your SSH private key password

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If you are using macOS, you might find it inconvenient to type your SSH private key password every time you push your code. Although security is essential, you can improve convenience by securely storing your password in Apple's Keychain.

It can be tempting to remove the password from your SSH private key, but this is not advisable.

Instead, store your key password in Keychain using the following command for a key named id_ed25519:

ssh-add --apple-use-keychain ~/.ssh/id_ed25519

After running this command, you should not be prompted for your key password again. If you use an RSA key, substitute id_ed25519 with id_rsa as shown below:

ssh-add --apple-use-keychain ~/.ssh/id_rsa