You can build and install a collection from a local source directory. The ``ansible-galaxy`` utility builds the collection using the ``MANIFEST.json`` or ``galaxy.yml``
Collections signed by a Galaxy server can be verified during installation with GnuPG. To opt into signature verification, configure a keyring for ``ansible-galaxy`` with native GnuPG tooling and provide the file path with the ``--keyring`` CLI option. Signatures provided by the Galaxy server will be used to verify the collection's ``MANIFEST.json``. If verification is unsuccessful, the collection will not be installed. GnuPG signature verification can be disabled with ``--disable-gpg-verify`` or by configuring :ref:`GALAXY_DISABLE_GPG_VERIFY`.
Use the ``--signature`` option to verify the collection's ``MANIFEST.json`` with additional signatures to those provided by the Galaxy server. Supplemental signatures should be provided as URIs.