Building JavaFx application using Bitbucket pipelines

I am trying to build JavaFx project using bitbucket pipelines. For that I am using maven:3-jdk-8 docker image. This Docker image uses OpenJDK 8 instead of Oracle's one (due to the lincensing issue) which does not include the JavaFx part. Note that I have to use Java 8 to build my project! Problem that I am getting is that I am not able to build the application using that docker image alone.

As proposed in an answer to the same question (https://stackoverflow.com/a/40167253/2000338): I tried using this bitbucket-pipelines.yml to try to overcome the situation:

image: maven:3-jdk-8

pipelines:
  default:
    - step:
        script: # Modify the commands below to build your repository.
          - apt-get update
          - apt-get install -y openjfx
          - mvn clean install # -B batch mode makes Maven less verbose

In step 2 it seems that openjfx is installed properly. But in step 3 I am getting following error:

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.8.0:compile (default-compile) on project ***********: Compilation failure: Compilation failure: 
[ERROR] /opt/atlassian/pipelines/agent/build/src/main/java/********/******/****/MainFx.java:[7,26] package javafx.application does not exist

It seams that it is still complaining on the JavaFx libraries missing, but I am not aware of why. On my developer machine (Windows 7, jdk1.8.0_221) I can execute maven build without an issue.

What was missing in previous approach is that the javafx library was not on the classpath. Basically in order to make maven build work I had to add the jfxrt.jar to the classpath. I found that in the maven:3-jdk-8 image after installing javafx the library can be found in: /usr/lib/jvm/java-8-openjdk-amd64/jre/lib/ext/jfxrt.jar

Adding this file to a classpath during build run will do the trick.

One idea (that worked for me) is to include this library in application pom/dependecy part as a system scope.

In my case I made a maven profile for that:

    <profiles>
    <profile>
        <id>docker_build</id>
        <activation>
            <activeByDefault>false</activeByDefault>
        </activation>
        <dependencies>
            <dependency>
                <groupId>com.oracle</groupId>
                <artifactId>javaFX</artifactId>
                <version>2.2</version>
                <scope>system</scope>
                <systemPath>${javafx-location}</systemPath>
            </dependency>
        </dependencies>
    </profile>
</profiles>

In order to run this maven build you have to issue proper maven command to add this profile. E.g.

mvn clean install -P docker_build -Djavafx-location=/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/ext/jfxrt.jar

To simplify this I made a Docker image using following Dockerfile:

FROM maven:3-jdk-8
RUN apt-get update && \
    apt-get install -y --no-install-recommends openjfx
COPY settings.xml /root/.m2/

which uses following maven settings.xml file:

<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0
                      https://maven.apache.org/xsd/settings-1.0.0.xsd">
    <localRepository>/usr/share/maven/ref/repository</localRepository>
    <activeProfiles>
        <activeProfile>docker_build</activeProfile>
    </activeProfiles>
    <profiles>
        <profile>
            <id>docker_build</id>
        <properties>
            <javafx-location>/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/ext/jfxrt.jar</javafx-location>
        </properties>
        </profile>
    </profiles>
</settings>

I also published it to the Docker hub if somebody may find it useful: https://hub.docker.com/r/brzigonzales/maven-javafx