fixed Docker build

Signed-off-by: Stephan Richter <s.richter@srsoftware.de>

Dockerfile

@@ -1,15 +1,15 @@
 FROM alpine:3.22 AS svelte_build
 RUN apk add npm
 RUN adduser -Dh /home/svelte svelte
-ADD . /home/svelte/Umbrella
+ADD frontend /home/svelte/Umbrella/frontend
 RUN chown -R svelte /home/svelte/Umbrella
 USER svelte
 WORKDIR /home/svelte/Umbrella/frontend
 RUN npm install && npm run build
 
 
-FROM alpine AS java_build
-RUN apk add gradle fontconfig font-opensans openjdk21-jre
+FROM alpine:3.22 AS java_build
+RUN apk add gradle
 ADD . /Umbrella
 WORKDIR /Umbrella
 COPY --from=svelte_build /home/svelte/Umbrella/frontend/dist web/src/main/resources/web

web/build.gradle.kts

@@ -9,4 +9,5 @@ tasks.processResources {
     from("../frontend/dist") {
         into("web")
     }
+    duplicatesStrategy = DuplicatesStrategy.EXCLUDE
 }