diff --git a/.woodpecker.yml b/.woodpecker.yml
index 42c19e0..0182fb8 100644
--- a/.woodpecker.yml
+++ b/.woodpecker.yml
@@ -13,6 +13,9 @@ steps:
       REGISTRY_PASSWORD:
         from_secret: REGISTRY_PASSWORD
     commands:
+      - test -n "${REGISTRY_HOSTPORT}"
+      - test -n "${REGISTRY_USERNAME}"
+      - test -n "${REGISTRY_PASSWORD}"
       - echo "${REGISTRY_PASSWORD}" | docker login "${REGISTRY_HOSTPORT}" -u "${REGISTRY_USERNAME}" --password-stdin
       - docker build -t "${REGISTRY_HOSTPORT}/nxtgauge-frontend-solid" -f Dockerfile .
       - docker push "${REGISTRY_HOSTPORT}/nxtgauge-frontend-solid"
diff --git a/README.md b/README.md
index d694ec1..bb1302f 100644
--- a/README.md
+++ b/README.md
@@ -6,3 +6,10 @@ SolidStart migration target for `nxtgauge-frontendwebsite`.
 Reproduce the same user-facing behavior and runtime-config driven flows without changing product logic.
 
 See `docs/MIGRATION_MASTER_PLAN.md` for the staged plan.
+
+## CI (Woodpecker)
+
+Required secrets:
+- `REGISTRY_HOSTPORT`
+- `REGISTRY_USERNAME`
+- `REGISTRY_PASSWORD`