.drone.yml

@@ -1,23 +1,35 @@
 kind: pipeline
-type: docker
 name: default
 
 steps:
+  - name: build
+    image: plugins/docker:linux-amd64
+    pull: always
+    settings:
+      daemon_off: false
+      dry_run: true
+      repo: docker.asperti.com/paspo/mqtt
+      tags:
+        - latest
+    when:
+      event:
+        exclude:
+        - tag
+                      
   - name: build_and_publish
     image: plugins/docker:linux-amd64
+    pull: always
     settings:
+      auto_tag: true
+      daemon_off: false
       password:
         from_secret: docker_password
       registry: docker.asperti.com
       repo: docker.asperti.com/paspo/mqtt
       tags:
         - latest
-        - ${DRONE_TAG}
-        - ${DRONE_SEMVER_MAJOR}.${DRONE_SEMVER_MINOR}
-      force_tag: true
       username:
         from_secret: docker_username
-
-trigger:
-  event:
-    - tag
+    when:
+      event:
+      - tag

Dockerfile

@@ -1,5 +1,4 @@
-FROM alpine:3.14
-RUN \
-  apk -U upgrade && apk add mosquitto mosquitto-clients openssl && \
-  echo "log_dest stdout" >/etc/mosquitto/mosquitto.conf
+FROM alpine:3.12
+RUN apk -U upgrade && apk add mosquitto mosquitto-clients openssl
+EXPOSE 8883
 ENTRYPOINT ["mosquitto", "-c", "/etc/mosquitto/mosquitto.conf"]