Multi-line secrets aren't masked by the runner, so a raw PEM key passed
as private_key ends up in plain text in the step's env block in the log.
Accept a single-line base64-encoded key instead, which is masked like
any other secret. Raw PEM keys still work for backwards compatibility.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Composite actions substitute ${{ inputs.* }} directly into the run:
script source before execution, and the runner echoes that resolved
script at the top of the step log. Interpolating private_key and
transfers straight into the heredocs meant the raw SSH private key
was printed in plaintext on every run. Move both through env: and
reference them as shell variables instead, matching ssh-checkout and
ssh-command.
megamileyandClaude Opus 5.5
Claude