improve ci

Dockerfile

@@ -1,14 +1,3 @@
-FROM docker.io/library/eclipse-temurin:25-jdk-alpine AS build
-
-COPY .mvn/ .mvn
-COPY mvnw pom.xml ./
-COPY src ./src
-COPY checkstyle.xml ./
-
-RUN ["chmod", "+x", "./mvnw"]
-RUN ./mvnw install
-
-
 FROM docker.io/library/eclipse-temurin:25-jre
 
 RUN apt-get update && apt-get install -y --no-install-recommends netcat-openbsd curl && rm -rf /var/lib/apt/lists/*
@@ -19,7 +8,7 @@ ARG API_PORT=9000
 EXPOSE ${API_PORT}
 
 COPY startup.sh ./
-COPY --from=build /target/netneutrality.jar ./
+COPY target/netneutrality.jar ./
 
 RUN ["chmod", "+x", "./startup.sh"]
 CMD ["./startup.sh"]