fix(docker-compose): When we have only one service in Docker Compose set its Dockerfile context dir to just build-context/ instead of build-context/service since the latter doesn't exist

docker-compose/examples/hashicorpvault/compose.override.yaml

@@ -4,7 +4,7 @@ services:
         image: "registry.example.com/project/vault:${VAULT_BUILD_DATE}-${VAULT_VERSION}"
         profiles: ["build"]
         build:
-            context: "build-context/vault"
+            context: "build-context"
             dockerfile: Dockerfile
             args:
                 EXAMPLE_ARG_FOR_DOCKERFILE: "${EXAMPLE_ARG_FROM_ENV_FILE}"