diff --git a/.drone.yml b/.drone.yml
index 0948702..039e308 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -1,22 +1,23 @@
+---
 kind: pipeline
 name: lint
 
 steps:
-- name: pylint
-  image: eeacms/pylint
-  commands:
-    - pip install -r requirements.txt
-    - pylint *.py
-
-- name: docker lint
-  image: hadolint/hadolint 
-  commands:
-  - hadolint --ignore DL3013 Dockerfile # ignore pinning version in pip
-
 - name: yaml lint
   image: cytopia/yamllint
   commands:
-    - yamllint .
+  - yamllint .
+
+- name: pylint
+  image: eeacms/pylint
+  commands:
+  - pip install -r requirements.txt
+  - pylint *.py
+
+- name: docker lint
+  image: hadolint/hadolint
+  commands:
+  - hadolint --ignore DL3013 Dockerfile  # ignore pinning version in pip
 
 - name: w3c validator
   image: validator/validator:latest
@@ -26,7 +27,7 @@ steps:
 - name: markdown lint
   image: pipelinecomponents/markdownlint:latest
   commands:
-    - mdl --style all --warnings .
+  - mdl --style all --warnings .
 
 ---
 kind: pipeline
@@ -47,15 +48,15 @@ steps:
   - docker image push kleph/beer
 
 services:
-  - name: docker
-    image: docker:18.09-dind
-    environment:
-      DOCKER_TLS_CERTDIR: ""
-    command: [ "--storage-driver=vfs", "--tls=false" ]
-    privileged: true
+- name: docker
+  image: docker:18.09-dind
+  environment:
+    DOCKER_TLS_CERTDIR: ""
+  command: ["--storage-driver=vfs", "--tls=false"]
+  privileged: true
 
 depends_on:
-  - lint
+- lint
 
 ---
 kind: pipeline
@@ -75,12 +76,12 @@ steps:
     KUBE_CA:
       form_secret: kubectl_ca
   commands:
-    - kubectl
-    - cat kube/kubeconfig_template.yaml | envsubst > /.kube/config
-    - kubectl get pods
-    - kubectl get deployments
-    - kubectl get svc
-    - kubectl apply -f kube/beer-deployment.yaml
+  - kubectl
+  - cat kube/kubeconfig_template.yaml | envsubst > /.kube/config
+  - kubectl get pods
+  - kubectl get deployments
+  - kubectl get svc
+  - kubectl apply -f kube/beer-deployment.yaml
 
 depends_on:
-  - build
+- build
diff --git a/.yamllint b/.yamllint
new file mode 100644
index 0000000..9eaf5ea
--- /dev/null
+++ b/.yamllint
@@ -0,0 +1,6 @@
+---
+extends: default
+
+rules:
+  indentation:
+    indent-sequences: consistent
diff --git a/kube/beer-deployment.yaml b/kube/beer-deployment.yaml
index f3aad88..bc17b38 100644
--- a/kube/beer-deployment.yaml
+++ b/kube/beer-deployment.yaml
@@ -1,3 +1,4 @@
+---
 apiVersion: apps/v1
 kind: Deployment
 metadata:
@@ -18,4 +19,3 @@ spec:
         imagePullPolicy: Always
         ports:
         - containerPort: 5000
-
diff --git a/kube/beer-ingress.yaml b/kube/beer-ingress.yaml
index c0c769c..d003247 100644
--- a/kube/beer-ingress.yaml
+++ b/kube/beer-ingress.yaml
@@ -1,3 +1,4 @@
+---
 apiVersion: networking.k8s.io/v1beta1
 kind: Ingress
 metadata:
@@ -13,4 +14,3 @@ spec:
         backend:
           serviceName: beer
           servicePort: 80
-
diff --git a/kube/beer-service.yaml b/kube/beer-service.yaml
index 5a2de90..7e7b673 100644
--- a/kube/beer-service.yaml
+++ b/kube/beer-service.yaml
@@ -1,3 +1,4 @@
+---
 apiVersion: v1
 kind: Service
 metadata:
@@ -9,4 +10,3 @@ spec:
     - protocol: TCP
       port: 80
       targetPort: 5000
-
diff --git a/kube/kubeconfig_template.yaml b/kube/kubeconfig_template.yaml
index e2bd7e0..0832edf 100644
--- a/kube/kubeconfig_template.yaml
+++ b/kube/kubeconfig_template.yaml
@@ -1,3 +1,4 @@
+---
 apiVersion: v1
 clusters:
 - cluster:
@@ -17,4 +18,3 @@ users:
   user:
     password: ${KUBE_PASSWORD}
     username: ${KUBE_USERNAME}
-