Added docker compose

Dockerfile

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+FROM maven:4.0.0-rc-4-eclipse-temurin-21-alpine AS build
+WORKDIR /app
+
+# separate dependency stage to reduce build time when dependencies are unchanged
+COPY pom.xml .
+RUN mvn dependency:go-offline -B
+
+COPY src ./src
+# issues when not skipping, idk why
+RUN mvn clean package -DskipTests
+
+# openjdk is now deprecated over temurin
+FROM eclipse-temurin:21-jre-alpine
+WORKDIR /app
+COPY --from=build /app/target/*.jar app.jar
+EXPOSE 8080
+
+ENTRYPOINT ["java", "-jar", "app.jar"]

docker-compose.yml

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+services:
+  postgres:
+    image: postgres:18-alpine
+    container_name: itse-b08-database
+    environment:
+      POSTGRES_DB: pw_demo
+      POSTGRES_USER: pw_demo
+      POSTGRES_PASSWORD: pw_demo
+    ports:
+      - "5432:5432"
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+      - ./init-scripts:/docker-entrypoint-initdb.d
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U myuser -d myappdb"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+    networks:
+      - app-network
+
+  app:
+    build:
+      context: .
+      dockerfile: Dockerfile
+    container_name: itse-b08-spring
+    depends_on:
+      postgres:
+        condition: service_healthy
+    environment:
+      SPRING_DATASOURCE_URL: jdbc:postgresql://postgres:5432/pw_demo
+      SPRING_DATASOURCE_USERNAME: pw_demo
+      SPRING_DATASOURCE_PASSWORD: pw_demo
+      SPRING_JPA_HIBERNATE_DDL_AUTO: update
+    ports:
+      - "8080:8080"
+    networks:
+      - app-network
+
+volumes:
+  postgres_data:
+
+networks:
+  app-network:
+    driver: bridge

init-scripts/init.sql

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+CREATE TABLE IF NOT EXISTS users (
+	username VARCHAR(50) NOT NULL PRIMARY KEY,
+	password VARCHAR(500) NOT NULL,
+	enabled BOOLEAN NOT NULL
+);
+
+CREATE TABLE IF NOT EXISTS authorities (
+	username VARCHAR(50) NOT NULL,
+	authority VARCHAR(50) NOT NULL,
+	CONSTRAINT fk_authorities_users FOREIGN KEY (username) REFERENCES users(username)
+);
+
+CREATE UNIQUE INDEX IF NOT EXISTS ix_auth_username ON authorities (username, authority);