github.com/containers/podman/v5@v5.1.0-rc1/docs/source/markdown/options/sign-passphrase-file.md (about)

     1  ####> This option file is used in:
     2  ####>   podman manifest push, push
     3  ####> If file is edited, make sure the changes
     4  ####> are applicable to all of those.
     5  #### **--sign-passphrase-file**=*path*
     6  
     7  If signing the image (using either **--sign-by** or **--sign-by-sigstore-private-key**), read the passphrase to use from the specified path.