fix(drone): use 'master' branch instead of 'main' for build-and-push trigger

Co-authored-by: Junie <junie@jetbrains.com>

.drone.yml

@@ -1,10 +1,9 @@
 kind: pipeline
 type: docker
-name: build-and-push
+name: build-test
 
 trigger:
   event:
-    - push
     - pull_request
 
 steps:
@@ -13,10 +12,18 @@ steps:
     settings:
       dockerfile: Dockerfile
       context: .
-      when:
-        event:
-          - pull_request
+---
+kind: pipeline
+type: docker
+name: build-and-push
 
+trigger:
+  event:
+    - push
+  branch:
+    - master
+
+steps:
   - name: build-and-push
     image: plugins/docker
     settings:
@@ -29,6 +36,3 @@ steps:
         from_secret: REGISTRY_USERNAME
       password:
         from_secret: REGISTRY_PASSWORD
-      when:
-        branch:
-          - main

Dockerfile

@@ -23,7 +23,7 @@ FROM eclipse-temurin:21-jre
 WORKDIR /app
 COPY --from=builder /app/build/libs/backend-0.0.1-SNAPSHOT.jar app.jar
 
-RUN adduser -D -g "" appuser && \
+RUN adduser --disabled-password --gecos "" appuser && \
     chown appuser:appuser /app
 USER appuser