Update CI.

.github/workflows/main.yml

@@ -0,0 +1,10 @@
+name: Unit/integration tests
+on: [ push, pull_request, workflow_dispatch ]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - run: docker build -t tests .
+      - run: docker run tests

Dockerfile

@@ -1,11 +1,12 @@
 # Dockerfile to build container for unit testing
 
-FROM openjdk:8
+FROM debian:stable
 
-RUN apt-get update && apt-get install -y git ant
+RUN apt-get update
+RUN apt-get install -y openjdk-17-jdk openjfx ant
 
 WORKDIR /root
 
 ADD . ./
 
-ENTRYPOINT ant test
+ENTRYPOINT JAVA_FX_HOME=/usr/share/java/ ant test