Document Dockerfile

Dockerfile

@@ -1,11 +1,29 @@
+# Stage 1: Building
 FROM maven:3.8.5-openjdk-17-slim AS builder
+
+# Set the work dir inside the container
 WORKDIR /app
+
+# Copy the POM file to the work dir
 COPY pom.xml .
+
+# Copy src to the work dir
 COPY src ./src
+
+# Run Maven to clean and package the app
 RUN mvn clean package -T12
 
+# Stage 2: Running
 FROM openjdk:17.0.1-jdk-slim
+
+# Set the work dir inside the container
 WORKDIR /usr/local/app
+
+# Copy the compiled JAR file from the builder stage to the work dir
 COPY --from=builder /app/target/LicenseServer.jar .
+
+# Expose the port
 EXPOSE 7500
+
+# Set the command to run the app when the container starts
 CMD ["java", "-jar", "LicenseServer.jar"]