jvm args feature (#15)

Author: kriscfoster

README.md

@@ -100,9 +100,10 @@ services:
     environment:
       - JAVA_HOME=/path/to/jdk/in/custom/image/bin/java
       - JUNIT_PARAMS=--include-classname com.something.integration.*
+      - JVM_ARGS=-Dfoo.bar=true
 ```
 
-## Pre compose up script
+## pre_compose_up_script
 
 Sometimes, you may need some logic to run before the compose test containers come up. You can use `pre_compose_up_script` for that purpose. See [examples/pre-compose-up-script-test](examples/pre-compose-up-script-test) for an example.
 

docker_compose/test_container_entrypoint.sh

@@ -33,9 +33,10 @@ for JAR in $JARS; do
   CLASS_PATH_STRING="$CLASS_PATH_STRING --class-path $JAR"
 done
 
+# JVM_ARGS can be set in the docker-compose file.
 # JUNIT_PARAMS can be set in the docker-compose file to filter for specific tests
 # e.g. --include-classname com.something.integration.*
-cmd="$JAVA_HOME/bin/java -jar $JUNIT_PLATFORM_CONSOLE_STANDALONE_JAR \
+cmd="$JAVA_HOME/bin/java -jar $JVM_ARGS $JUNIT_PLATFORM_CONSOLE_STANDALONE_JAR \
     --scan-class-path --fail-if-no-tests $CLASS_PATH_STRING --class-path $TEST_UBER_JAR $JUNIT_PARAMS"
 echo $cmd
 $cmd