Try creating an orb

.circleci/config.yml

@@ -1,21 +1,30 @@
 version: 2.1
-jobs:
-  build:
-    docker:
-      - image: circleci/clojure:lein-2.8.1
-    working_directory: ~/repo
-    environment:
-      LEIN_ROOT: "true"
-      JVM_OPTS: -Xmx3200m
-    steps:
-      - checkout
-      - restore_cache:
-          keys:
-            - v1-dependencies-{{ checksum "project.clj" }}
-            # fallback to using the latest cache if no exact match is found
-            - v1-dependencies-
-      - run: lein test
-      - save_cache:
-          paths:
-            - ~/.m2
-          key: v1-dependencies-{{ checksum "project.clj" }}
+orbs:
+  clojure-leiningen:
+    executors:
+      leiningen:
+        docker:
+          - image: circleci/clojure:lein-2.8.1
+        environment:
+          LEIN_ROOT: "true"
+          JVM_OPTS: -Xmx3200m
+        working_directory: ~/repo
+    jobs:
+      lein-test:
+        executor: leiningen
+        steps:
+          - checkout
+          - restore_cache:
+              keys:
+                - v1-dependencies-{{ checksum "project.clj" }}
+                # fallback to using the latest cache if no exact match is found
+                - v1-dependencies-
+          - run: lein test
+          - save_cache:
+              paths:
+                - ~/.m2
+              key: v1-dependencies-{{ checksum "project.clj" }}
+workflows:
+  test:
+    jobs:
+      - clojure-leiningen/lein-test