diff --git a/builder/docker/test-fixtures/cake b/builder/docker/test-fixtures/cake
deleted file mode 100644
index 63d40b126..000000000
--- a/builder/docker/test-fixtures/cake
+++ /dev/null
@@ -1 +0,0 @@
-chocolate cake is delicious
diff --git a/builder/docker/test-fixtures/manycakes/chocolate b/builder/docker/test-fixtures/manycakes/chocolate
new file mode 100644
index 000000000..a2286c928
--- /dev/null
+++ b/builder/docker/test-fixtures/manycakes/chocolate
@@ -0,0 +1 @@
+chocolate!
diff --git a/builder/docker/test-fixtures/manycakes/vanilla b/builder/docker/test-fixtures/manycakes/vanilla
new file mode 100644
index 000000000..000a45578
--- /dev/null
+++ b/builder/docker/test-fixtures/manycakes/vanilla
@@ -0,0 +1 @@
+vanilla!
diff --git a/builder/docker/test-fixtures/onecakes/strawberry b/builder/docker/test-fixtures/onecakes/strawberry
new file mode 100644
index 000000000..b663de3a9
--- /dev/null
+++ b/builder/docker/test-fixtures/onecakes/strawberry
@@ -0,0 +1 @@
+strawberry!