fix railway deploy

Author: apexearth

.github/workflows/actions-image.yml

@@ -110,5 +110,6 @@ jobs:
           # to the SHA-tagged image but `serviceInstanceUpdate` alone does
           # not trigger a deployment — Railway needs an explicit poke.
           npm i -g @railway/cli
+          railway link --project "$RAILWAY_PROJECT_ID"
           railway service "$RAILWAY_SERVICE_ID"
           railway deploy --yes