add cert file

add-osx-cert.sh

@@ -0,0 +1,24 @@
+#!/usr/bin/env sh
+
+# see: https://dev.to/rwwagner90/signing-electron-apps-with-github-actions-4cof
+KEY_CHAIN=build.keychain
+CERTIFICATE_P12=certificate.p12
+
+# Recreate the certificate from the secure environment variable
+echo $CERTIFICATE_OSX_APPLICATION | base64 --decode > $CERTIFICATE_P12
+
+#create a keychain
+security create-keychain -p actions $KEY_CHAIN
+
+# Make the keychain the default so identities are found
+security default-keychain -s $KEY_CHAIN
+
+# Unlock the keychain
+security unlock-keychain -p actions $KEY_CHAIN
+
+security import $CERTIFICATE_P12 -k $KEY_CHAIN -P $CERTIFICATE_PASSWORD -T /usr/bin/codesign;
+
+security set-key-partition-list -S apple-tool:,apple: -s -k actions $KEY_CHAIN
+
+# remove certs
+rm -fr *.p12