Add Discord link in issues (#239)

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,5 @@
+blank_issues_enabled: false
+contact_links:
+  - name: Discuss on Discord
+    url: https://game.ci/discord
+    about: Join our Discord community

dist/index.js

@@ -346,6 +346,7 @@ class Docker {
         --env UNITY_PASSWORD \
         --env UNITY_SERIAL \
         --env UNITY_VERSION="${version}" \
+        --env USYM_UPLOAD_AUTH_TOKEN \
         --env PROJECT_PATH="${projectPath}" \
         --env BUILD_TARGET="${platform}" \
         --env BUILD_NAME="${buildName}" \