fix dockerfile

Signed-off-by: Peter Siegmund <developer@mars3142.org>

Dockerfile

@@ -9,12 +9,10 @@ WORKDIR /usr/src/app/
 RUN chown app:app /usr/src/app/
 USER app
 
-# Copy pom.xml and prefetch dependencies so a repeated build can continue from the next step with existing dependencies
+# Copy all needed project files to a folder
 COPY --chown=app ./gradle/ ./gradle
 COPY --chown=app ./gradlew ./build.gradle ./settings.gradle ./
-
-# Copy all needed project files to a folder
-COPY --chown=app:app ./src ./src
+COPY --chown=app ./src ./src
 
 # Build the production package
 RUN ./gradlew clean build -x test