Update Dockerfile

Dockerfile

@@ -1,27 +1,29 @@
 # STEP 1: Build stage
 FROM gradle:8-jdk17 AS build
 WORKDIR /home/gradle/src
-# Copy everything and build
+
+# Copy all project files
 COPY --chown=gradle:gradle . .
-# This runs your custom 'jar' task from build.gradle
+
+# Run the 'jar' task defined in your build.gradle
 RUN gradle jar --no-daemon
 
 # STEP 2: Runtime stage
 FROM eclipse-temurin:17-jre
 WORKDIR /app
 
-# Copy the JAR. Your build.gradle creates 'eleeter-1.0.jar' (group + version) 
-# or similar. Using *.jar is safer.
+# 1. Copy the JAR from the build stage
 COPY --from=build /home/gradle/src/build/libs/*.jar app.jar
 
+# 2. Copy your JSON configuration files
 COPY *.json .
 
-RUN echo "hosts: files dns" > /etc/nsswitch.conf
-
+# 3. FIX DNS: Force the container to use Google's DNS
+RUN echo "nameserver 8.8.8.8" > /etc/resolv.conf
 
-# Give permissions and expose port
+# 4. Set permissions
 RUN chmod -R 777 /app
 EXPOSE 8000
 
-# Start Java directly
+# 5. Start Java with DNS caching disabled to prevent "UnknownHost" sticking
 ENTRYPOINT ["java", "-Dsun.net.inetaddr.ttl=0", "-Dsun.net.inetaddr.negative.ttl=0", "-jar", "app.jar"]