diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index fcdba529..d04b48a4 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -28,6 +28,7 @@ jobs:
       # ** FOR GENERAL USE, SHOULD NOT NEED TO CHANGE **
       instance: iris
       artifact_dir: build-artifacts
+      sys_dir: durable
       
       # Note: test_reports value is duplicated in test_flags environment variable
       test_reports: test-reports
@@ -54,7 +55,7 @@ jobs:
           
           # Run InterSystems IRIS Instance
           docker pull $container_image
-          docker run -d -h $instance --name $instance -v $GITHUB_WORKSPACE:/source:rw -v $GITHUB_WORKSPACE/$test_reports:/$test_reports:rw -v $GITHUB_WORKSPACE/$artifact_dir:/$artifact_dir:rw --init $container_image
+          docker run -d -h $instance --name $instance -v $GITHUB_WORKSPACE:/source:rw -v $GITHUB_WORKSPACE/$test_reports:/$test_reports:rw -v $GITHUB_WORKSPACE/$artifact_dir:/$artifact_dir:rw -v $GITHUB_WORKSPACE/$sys_dir:/$sys_dir --env ISC_DATA_DIRECTORY=/$sys_dir --init $container_image
           echo halt > wait
           # Wait for instance to be ready
           until docker exec --interactive $instance iris session $instance < wait; do sleep 1; done