Working HTTP tunnel

Dockerfile

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+# Multi-stage build for tunnel client
+FROM maven:3.9.6-eclipse-temurin-21 AS builder
+
+WORKDIR /app
+
+# Copy pom.xml first for better Docker layer caching
+COPY pom.xml .
+RUN mvn dependency:go-offline -B
+
+# Copy source code and build
+COPY src ./src
+RUN mvn clean package -DskipTests
+
+# Runtime stage
+FROM eclipse-temurin:21-jre-alpine
+
+WORKDIR /app
+
+# Create data directory for H2 database
+RUN mkdir -p /app/data
+
+# Create non-root user
+RUN addgroup -g 1001 -S tunnel && \
+    adduser -S tunnel -u 1001 -G tunnel
+
+# Copy the jar file
+COPY --from=builder /app/target/*.jar app.jar
+
+# Change ownership of the app directory
+RUN chown -R tunnel:tunnel /app
+
+# Switch to non-root user
+USER tunnel
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=10s --start-period=60s --retries=3 \
+  CMD curl -f http://localhost:8765/actuator/health || exit 1
+
+# Expose port
+EXPOSE 8765
+
+# Environment variables
+ENV SPRING_PROFILES_ACTIVE=docker
+ENV JAVA_OPTS="-Xmx512m -Xms256m"
+
+# Run the application
+ENTRYPOINT ["sh", "-c", "java $JAVA_OPTS -jar app.jar"]