Run JRuby builds on GHA

Author: pirj

.github/workflows/ci.yml

@@ -39,6 +39,11 @@ jobs:
          - ruby: 2.5
            env:
              RAILS_VERSION: '~> 6.1.0'
+         - ruby: jruby-9.3.1.0
+           env:
+             RAILS_VERSION: '~> 6.1.0'
+             JRUBY_OPT: '--dev'
+             JAVA_OPTS: '--add-opens java.base/sun.nio.ch=org.jruby.dist --add-opens java.base/java.io=org.jruby.dist --add-opens=java.base/java.lang=ALL-UNNAMED --add-opens=java.base/java.security=ALL-UNNAMED --add-opens=java.base/java.util=ALL-UNNAMED --add-opens=java.base/java.security.cert=ALL-UNNAMED --add-opens=java.base/java.util.zip=ALL-UNNAMED --add-opens=java.base/java.lang.reflect=ALL-UNNAMED --add-opens=java.base/java.util.regex=ALL-UNNAMED --add-opens=java.base/java.net=ALL-UNNAMED --add-opens=java.base/java.io=ALL-UNNAMED  --add-opens=java.base/java.lang=ALL-UNNAMED --add-opens=java.base/javax.crypto=ALL-UNNAMED --add-opens=java.management/sun.management=ALL-UNNAMED'
 
          # Rails 6.0 builds >= 2.5.0
          - ruby: 3.0
@@ -53,6 +58,12 @@ jobs:
          - ruby: 2.5
            env:
              RAILS_VERSION: '~> 6.0.0'
+         - ruby: jruby-9.3.1.0
+           env:
+             RAILS_VERSION: '~> 6.0.0'
+             JRUBY_OPT: '--dev'
+             JAVA_OPTS: '--add-opens java.base/sun.nio.ch=org.jruby.dist --add-opens java.base/java.io=org.jruby.dist --add-opens=java.base/java.lang=ALL-UNNAMED --add-opens=java.base/java.security=ALL-UNNAMED --add-opens=java.base/java.util=ALL-UNNAMED --add-opens=java.base/java.security.cert=ALL-UNNAMED --add-opens=java.base/java.util.zip=ALL-UNNAMED --add-opens=java.base/java.lang.reflect=ALL-UNNAMED --add-opens=java.base/java.util.regex=ALL-UNNAMED --add-opens=java.base/java.net=ALL-UNNAMED --add-opens=java.base/java.io=ALL-UNNAMED  --add-opens=java.base/java.lang=ALL-UNNAMED --add-opens=java.base/javax.crypto=ALL-UNNAMED --add-opens=java.management/sun.management=ALL-UNNAMED'
+
          # Rails 5.2 builds >= 2.2.2
          - ruby: 2.6.6
            env:
@@ -72,6 +83,12 @@ jobs:
          - ruby: 2.2.10
            env:
              RAILS_VERSION: '5-2-stable'
+         - ruby: jruby-9.3.1.0
+           env:
+             RAILS_VERSION: '~> 5.2.0'
+             JRUBY_OPT: '--dev'
+             JAVA_OPTS: '--add-opens java.base/sun.nio.ch=org.jruby.dist --add-opens java.base/java.io=org.jruby.dist --add-opens=java.base/java.lang=ALL-UNNAMED --add-opens=java.base/java.security=ALL-UNNAMED --add-opens=java.base/java.util=ALL-UNNAMED --add-opens=java.base/java.security.cert=ALL-UNNAMED --add-opens=java.base/java.util.zip=ALL-UNNAMED --add-opens=java.base/java.lang.reflect=ALL-UNNAMED --add-opens=java.base/java.util.regex=ALL-UNNAMED --add-opens=java.base/java.net=ALL-UNNAMED --add-opens=java.base/java.io=ALL-UNNAMED  --add-opens=java.base/java.lang=ALL-UNNAMED --add-opens=java.base/javax.crypto=ALL-UNNAMED --add-opens=java.management/sun.management=ALL-UNNAMED'
+
     env: ${{ matrix.env }}
     steps:
       - uses: actions/checkout@v2