Dockerfile

# -------- Stage 1: Build the Spring Boot application --------
FROM maven:3.9.6-eclipse-temurin-21 AS build

# Create a working directory
WORKDIR /app

# Copy the Maven project files
COPY pom.xml .
COPY src ./src

# Build the project (skip tests to speed up)
RUN mvn clean package -DskipTests


# -------- Stage 2: Create a lightweight runtime image --------
FROM openjdk:21-jdk

# Set working directory in runtime container
WORKDIR /app

# Copy the built jar file from the build stage
COPY --from=build /app/target/*.jar app.jar

# Expose the Spring Boot default port
EXPOSE 7860

# Run the app
ENTRYPOINT ["java", "-jar", "app.jar"]