chore(drone): always pull image

Author: duanhongyi

.drone/drone.yml

@@ -9,7 +9,7 @@ platform:
 steps:
 - name: test
   image: docker.io/drycc/go-dev
-  pull: if-not-exists
+  pull: always
   privileged: true
   commands:
   - cd grafana && make test && cd ..
@@ -29,7 +29,7 @@ steps:
 
 - name: publish
   image: docker.io/drycc/go-dev
-  pull: if-not-exists
+  pull: always
   privileged: true
   commands:
   - echo $DOCKER_PASSWORD | docker login $DRYCC_REGISTRY --username $DOCKER_USERNAME --password-stdin
@@ -75,7 +75,7 @@ platform:
 steps:
 - name: publish
   image: docker.io/drycc/go-dev
-  pull: if-not-exists
+  pull: always
   privileged: true
   commands:
   - echo $DOCKER_PASSWORD | docker login $DRYCC_REGISTRY --username $DOCKER_USERNAME --password-stdin
@@ -112,7 +112,7 @@ name: manifest
 steps:
 - name: generate grafana manifest
   image: docker.io/library/alpine
-  pull: if-not-exists
+  pull: always
   commands:
   - sed -i "s/docker.io/$${DRYCC_REGISTRY}/g" .drone/manifest.tmpl
   - sed -i "s/monitor/grafana/g" .drone/manifest.tmpl
@@ -136,7 +136,7 @@ steps:
 
 - name: generate telegraf manifest
   image: docker.io/library/alpine
-  pull: if-not-exists
+  pull: always
   commands:
   - sed -i "s/docker.io/$${DRYCC_REGISTRY}/g" .drone/manifest.tmpl
   - sed -i "s/grafana/telegraf/g" .drone/manifest.tmpl