Merge pull request #1218 from styk-tv/dockerfile-fix-oct24

dockerfile - fixed pom location error - reduced image size by close to 2/3

Dockerfile

@@ -1,21 +1,42 @@
-FROM maven:3-openjdk-11-slim
+# Stage 1: Build the application using Maven
+FROM maven:3-openjdk-11-slim AS build
 
+# Create a working directory and set permissions
 RUN useradd -m robot
 RUN mkdir -p /usr/src/app
 RUN chown robot /usr/src/app
 
+WORKDIR /usr/src/app
+
+# Copy the POM and source code to the working directory
 COPY pom.xml /usr/src/app
 COPY robot-command /usr/src/app/robot-command
 COPY robot-core /usr/src/app/robot-core
 COPY robot-maven-plugin /usr/src/app/robot-maven-plugin
-COPY bin/robot /usr/local/bin/
+COPY robot-mock-plugin /usr/src/app/robot-mock-plugin
+
+# Change ownership to robot user
 RUN chown -R robot:robot /usr/src/app
 
+# Use the robot user to run Maven
 USER robot
-WORKDIR /usr/src/app
+
+# Run the Maven build, skipping tests to speed up the process
 RUN mvn install -DskipTests
 
-USER root
-RUN cp bin/robot.jar /usr/local/bin
+# Stage 2: Create a smaller runtime container
+FROM openjdk:11-jre-slim AS runtime
+
+# Create a non-root user and set up a working directory
+RUN useradd -m robot
+RUN mkdir -p /usr/src/app/bin
+RUN chown robot /usr/src/app/bin
+
+# Copy the compiled JAR file from the build stage to the runtime stage
+COPY --from=build /usr/src/app/bin/robot.jar /usr/src/app/bin/robot.jar
+
+# Set robot as the user
 USER robot
-ENTRYPOINT ["robot"]
+
+# Set the entrypoint to run the robot.jar
+ENTRYPOINT ["java", "-jar", "/usr/src/app/bin/robot.jar"]

README.md

@@ -30,7 +30,7 @@ Other build options:
 - `mvn clean verify` rebuilds the package and runs integration tests against it, with reports in `[module]/target/failsafe-reports`
 - `mvn site` generates Javadoc in `target/site` and `[module]/target/site`
 
-Alternatively, you can use [Docker](https://www.docker.com) with the provided [Dockerfile](Dockerfile) to build and run ROBOT from within a container. First build an image with `docker build --tag robot .` then run ROBOT from the container with the usual command-line arguments: `docker run --rm robot --help`.
+Alternatively, you can use [Docker](https://www.docker.com) with the provided [Dockerfile](Dockerfile) to build and run ROBOT from within a container. First build an image with `docker build --tag robot:latest .` then run ROBOT from the container with the usual command-line arguments: `docker run --rm robot --help`.
 
 
 ## Code Style