diff --git a/.drone.yml b/.drone.yml
index fe384b6..f4487af 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -1,5 +1,23 @@
 ---
 kind: pipeline
+type: docker
+name: pull
+steps:
+  - name: validate yaml
+    image: docker:dind
+    environment:
+      REGISTRY_USERNAME:
+        from_secret: REGISTRY_USERNAME
+      REGISTRY_PASSWORD:
+        from_secret: REGISTRY_PASSWORD
+    commands:
+      - apk add --no-cache make
+      - make validate
+    when:
+      event: pull_request
+...
+---
+kind: pipeline
 type: ssh
 name: default
 
diff --git a/Makefile b/Makefile
index a3170a5..41c696a 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,22 @@
 MAKEFLAGS += --silent
 
+ENV_FILE=.env
+ifneq ("$(wildcard .env)","")
+    include $(ENV_FILE)
+    export $(ENV_FILE)
+endif
+
+REGISTRY=registry.fedy95.com
+YAMLLINT_TAG=baseimage-yamllint:latest
+
 .PHONY: *
 
+validate:
+	docker login "${REGISTRY}" -u"${REGISTRY_LOGIN}" -p"${REGISTRY_PASSWORD}"
+	docker pull "${REGISTRY}"/"${YAMLLINT_TAG}"
+	@docker run --rm $$(tty -s && echo "-it" || echo) -v $(PWD):/data "${REGISTRY}"/"${YAMLLINT_TAG}" .
+	docker logout registry.fedy95.com
+
 restart:
 	docker-compose -f docker-compose.yml down
 	docker-compose -f docker-compose.yml up -d