Find docker location

Signed-off-by: Craig Perkins <cwperx@amazon.com>

.github/workflows/gradle.yml

@@ -63,7 +63,7 @@ jobs:
       working-directory: ./tmp/performance-analyzer
       run: ./gradlew updateShas
     - name: Set docker-compose path
-      run: echo "DOCKER_COMPOSE_LOCATION=$(which docker-compose)" >> $GITHUB_ENV
+      run: echo "DOCKER_COMPOSE_LOCATION=$(which docker)" >> $GITHUB_ENV
       # Set the vm.max_map_count system property to the minimum required to run OpenSearch
     - name: Set vm.max_map_count
       run: sudo sysctl -w vm.max_map_count=262144

build.gradle

@@ -498,15 +498,15 @@ task runDocker(type: Exec) {
     // It sets the path to the docker-compose program from an environment variable
     // The DOCKER_COMPOSE_LOCATION environment variable is set in the gradle.yml file inside the
     // performance-analyzer repository.
-    def docker_compose_location = "docker compose"
+    def docker_compose_location = "docker"
     if (System.getenv("DOCKER_COMPOSE_LOCATION") != null) {
         docker_compose_location = System.getenv("DOCKER_COMPOSE_LOCATION")
     }
 
     environment 'DATA_VOLUME1', 'opensearchdata1'
     environment 'DATA_VOLUME2', 'opensearchdata2'
 
-    commandLine(docker_compose_location,
+    commandLine(docker_compose_location, 'compose',
             '-f', 'docker-compose.yml',
             '-f', 'docker-compose.hostports.yml',
             '-f', 'docker-compose.cluster.yml',