more reorganization of packages

docker/backend/Dockerfile

@@ -1,6 +1,6 @@
 # Stage 1: Build the application (The Build Stage)
 # Use a Java SDK image with Maven pre-installed
-FROM maven:3.9-jdk-17-slim AS build
+FROM maven:3.9-jdk-21-slim AS build
 
 # Set the working directory inside the container
 WORKDIR /app
@@ -17,7 +17,7 @@ RUN mvn clean package -DskipTests
 
 # Stage 2: Create the final lightweight image (The Runtime Stage)
 # Use a smaller Java Runtime Environment (JRE) image for a smaller footprint
-FROM openjdk:17-jre-slim
+FROM openjdk:21
 
 # Set the working directory in the final image
 WORKDIR /app

docker/compose.yaml

@@ -1,9 +0,0 @@
-services:
-  postgres:
-    image: 'postgres:latest'
-    environment:
-      - 'POSTGRES_DB=mydatabase'
-      - 'POSTGRES_PASSWORD=secret'
-      - 'POSTGRES_USER=myuser'
-    ports:
-      - '5432'