diff --git a/src/clj_test_containers/core.clj b/src/clj_test_containers/core.clj
index 4f84909..bda7988 100644
--- a/src/clj_test_containers/core.clj
+++ b/src/clj_test_containers/core.clj
@@ -1,14 +1,10 @@
 (ns clj-test-containers.core
   (:require [clojure.java.io :as io])
-  (:import [org.testcontainers.containers
-            GenericContainer]
-           [org.testcontainers.utility
-            MountableFile]
+  (:import [org.testcontainers.containers GenericContainer]
+           [org.testcontainers.utility MountableFile]
            [org.testcontainers.containers BindMode]
-           [org.testcontainers.images.builder
-            ImageFromDockerfile]
-           [java.nio.file
-            Path Paths]))
+           [org.testcontainers.images.builder ImageFromDockerfile]
+           [java.nio.file Path Paths]))
 
 (defn- resolve-bind-mode
   [bind-mode]
@@ -37,15 +33,14 @@
 (defn create-from-docker-file
   [{:keys [exposed-ports env-vars command docker-file]
     :or {docker-file "Dockerfile"}}]
-  (let [docker-image (ImageFromDockerfile.)
-        docker-image (-> docker-image
+  (let [docker-image (-> (ImageFromDockerfile.)
                          (.withDockerfile (Paths/get "." (into-array [docker-file]))))
         container (GenericContainer. docker-image)]
     (.setExposedPorts container (map int exposed-ports))
-    (if env-vars
+    (if (some? env-vars)
       (doseq [[k v] env-vars]
         (.addEnv container k v)))
-    (if command
+    (if (some? command)
       (.setCommand container command))
     {:container container
      :exposed-ports (.getExposedPorts container)
diff --git a/test/clj_test_containers/core_test.clj b/test/clj_test_containers/core_test.clj
index a04e439..c78067e 100644
--- a/test/clj_test_containers/core_test.clj
+++ b/test/clj_test_containers/core_test.clj
@@ -16,11 +16,8 @@
       (is (nil? (:mapped-ports stopped-container)))))
 
   (testing "Testing basic testcontainer image creation from docker file"
-    (let [container (create-from-docker-file {:env-vars
-                                              {"FOO" "bar"
-                                               "MAGIC_NUMBER" "42"}
-                                              :exposed-ports [80]
-                                              :docker-file "resources/Dockerfile"})
+    (let [container (create-from-docker-file {:exposed-ports [80]
+                                              :docker-file "test/resources/Dockerfile"})
           initialized-container (start! container)
           stopped-container (stop! container)]
       (is (some? (:id initialized-container)))
diff --git a/resources/Dockerfile b/test/resources/Dockerfile
similarity index 100%
rename from resources/Dockerfile
rename to test/resources/Dockerfile
diff --git a/resources/index.html b/test/resources/index.html
similarity index 100%
rename from resources/index.html
rename to test/resources/index.html