changed dockerfile

Dockerfile

@@ -2,10 +2,10 @@ FROM eclipse-temurin:17-jdk AS build
 
 WORKDIR /app
 
-# Install Maven just for dependency fetching
-RUN apt-get update && apt-get install -y maven curl && rm -rf /var/lib/apt/lists/*
+# Install Maven for dependency fetching
+RUN apt-get update && apt-get install -y maven && rm -rf /var/lib/apt/lists/*
 
-# Create a minimal pom.xml to fetch Javalin + Gson
+# Create minimal pom.xml
 RUN echo '<project xmlns="http://maven.apache.org/POM/4.0.0" \
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" \
   xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 \
@@ -20,20 +20,19 @@ RUN echo '<project xmlns="http://maven.apache.org/POM/4.0.0" \
   </dependencies> \
 </project>' > pom.xml
 
-# Download dependencies into /root/.m2/repository
+# Download dependencies into libs/
 RUN mvn dependency:copy-dependencies -DoutputDirectory=libs
 
-# Copy source
+# Copy sources
 COPY DemoApplication.java User.java ./
 
-# Compile with all dependencies
-RUN javac -cp "libs/*" DemoApplication.java User.java && \
+# Compile including libs and current dir
+RUN javac -cp "libs/*:." DemoApplication.java User.java && \
     jar cfe app.jar DemoApplication *.class
 
 FROM eclipse-temurin:17-jre
 WORKDIR /app
 
-# Copy compiled JAR + libraries
 COPY --from=build /app/app.jar .
 COPY --from=build /app/libs ./libs