Use public GH creds for tag publish (#53)

Author: kkuzmin

ps_spec.yml

@@ -22,8 +22,7 @@ stages:
         commands:
             - |
               set -ex
-              #git config --global --add url."[email protected]:".insteadOf "https://github.com/"
-  
+              
               echo //registry.npmjs.org/:_authToken=$NPM_TOKEN > .npmrc
               npm whoami
               
@@ -32,6 +31,8 @@ stages:
               V_VERSION=v$PKGVERSION
               WORDCOUNT=$(npm view "${PKGNAME}@${PKGVERSION}" | wc -c)
               
+              git config --global credential.helper \'store\' || true
+              echo "https://$ALPS_GH_USER:[email protected]" > ~/.git-credentials
               git tag -a $V_VERSION -m "$PKGNAME release $V_VERSION" HEAD
               
               npm install