Dockerfile

Dockerfile

@@ -1,52 +1,31 @@
-# Multi-stage build for Spring Boot application
+FROM maven:3.9.9-eclipse-temurin-21 AS build
-FROM maven:3.9.6-eclipse-temurin-21 AS build
+WORKDIR /app
+COPY ./pom.xml ./
+RUN mvn dependency:resolve
+COPY . .
+RUN mvn clean install 
+# -DskipTests
 
-# Set working directory
+FROM openjdk:21-jdk-slim
+
+# Create a non-root user and group for security
+RUN groupadd -r appgroup && useradd -r -s /bin/false -g appgroup appuser
+
+# Create a directory for heap dumps and give ownership to the new user
+RUN mkdir /dumps && chown appuser:appgroup /dumps
+
+# Set the working directory
 WORKDIR /app
 
-# Copy pom.xml and download dependencies
+# Copy the application jar and .env file from the build stage
-COPY pom.xml .
+COPY --from=build /app/target/*.jar app.jar
-RUN mvn dependency:go-offline -B
+COPY --from=build /app/.env .env
 
-# Copy source code
+# Change ownership of the application files to the non-root user
-COPY src ./src
+RUN chown appuser:appgroup app.jar .env
 
-# Build the application
+# Switch to the non-root user
-RUN mvn clean package -DskipTests
+USER appuser
 
-# Runtime stage
+# Run the jar file with JVM flags for heap dump generation on OutOfMemoryError
-FROM eclipse-temurin:21-jre-slim
+ENTRYPOINT ["java", "-XX:+HeapDumpOnOutOfMemoryError", "-XX:HeapDumpPath=/dumps/heap.hprof", "-jar", "app.jar"]
-
-# Set working directory
-WORKDIR /app
-
-# Create non-root user for security
-RUN groupadd -r konturai && useradd -r -g konturai konturai
-
-# Install necessary packages
-RUN apt-get update && \
-    apt-get install -y --no-install-recommends \
-    curl \
-    && rm -rf /var/lib/apt/lists/*
-
-# Copy the JAR file from build stage
-COPY --from=build /app/target/konturai-*.jar app.jar
-
-# Change ownership to non-root user
-RUN chown konturai:konturai app.jar
-
-# Switch to non-root user
-USER konturai
-
-# Expose port
-EXPOSE 8080
-
-# Health check
-HEALTHCHECK --interval=30s --timeout=3s --start-period=60s --retries=3 \
-    CMD curl -f http://localhost:8080/actuator/health || exit 1
-
-# Set JVM options for containerized environment
-ENV JAVA_OPTS="-Xmx512m -Xms256m -XX:+UseContainerSupport -XX:MaxRAMPercentage=75.0"
-
-# Run the application
-ENTRYPOINT ["sh", "-c", "java $JAVA_OPTS -jar app.jar"]