refactor: use strings

.woodpecker.yml

@@ -1,24 +1,24 @@
 pipeline:
   publish:
-    image: plugins/docker
+    image: "plugins/docker"
     settings:
-      registry: registry.nulo.in
-      username: sutty
-      repo: registry.nulo.in/sutty/CHANGEME
+      registry: "registry.nulo.in"
+      username: "sutty"
+      repo: "registry.nulo.in/sutty/CHANGEME"
       tags:
-      - ${ALPINE_VERSION}
-      - latest
+      - "${ALPINE_VERSION}"
+      - "latest"
       build_args:
-      - ALPINE_VERSION=${ALPINE_VERSION}
-      - BASE_IMAGE=registry.nulo.in/sutty/monit
+      - "ALPINE_VERSION=${ALPINE_VERSION}"
+      - "BASE_IMAGE=registry.nulo.in/sutty/monit"
     secrets:
-    - docker_password
+    - "docker_password"
     when:
-      branch: antifascista
-      event: push
+      branch: "antifascista"
+      event: "push"
 matrix:
   ALPINE_VERSION:
-  - 3.17.1
-  - 3.16.3
-  - 3.15.6
-  - 3.14.8
+  - "3.17.1"
+  - "3.16.3"
+  - "3.15.6"
+  - "3.14.8"