diff --git a/Dockerfile b/Dockerfile
index 57f018f..2ebb588 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -59,9 +59,12 @@ ENV PATH=/data/node_modules/.bin:$PATH
 
 # Temporary build stage where we can run the test suite.
 FROM base AS test
-COPY --from=ghcr.io/goss-org/goss:latest /usr/bin/goss /usr/bin/goss
-ADD goss.yml /tmp/goss.yml
-RUN goss --gossfile=/tmp/goss.yml validate
+
+USER root
+RUN apk add bats
+
+ADD tests.bats /tmp/tests.bats
+RUN bats /tmp/tests.bats
 
 FROM base AS run
 CMD ["bash"]
diff --git a/goss.yml b/goss.yml
deleted file mode 100644
index 23ae89f..0000000
--- a/goss.yml
+++ /dev/null
@@ -1,18 +0,0 @@
-command:
-  npm:
-    exec: "npm --help"
-    exit-status: 1
-    stdout:
-      - DISCLAIMER
-
-  yarn:
-    exec: "yarn --help"
-    exit-status: 0
-    stdout:
-      - DISCLAIMER
-
-  pnpm:
-    exec: "pnpm --help"
-    exit-status: 0
-    stdout:
-      - "compiled to binary"
diff --git a/tests.bats b/tests.bats
new file mode 100644
index 0000000..40afde8
--- /dev/null
+++ b/tests.bats
@@ -0,0 +1,25 @@
+#!/usr/bin/env bats
+
+setup() {
+  # load helper libraries when using the official Docker image
+  bats_load_library bats-support
+  bats_load_library bats-assert
+}
+
+@test "npm --help exits 1 and mentions DISCLAIMER" {
+  run npm --help
+  [ "$status" -eq 1 ]
+  assert_output --partial "DISCLAIMER"
+}
+
+@test "yarn --help exits 0 and mentions DISCLAIMER" {
+  run yarn --help
+  [ "$status" -eq 0 ]
+  assert_output --partial "DISCLAIMER"
+}
+
+@test "pnpm --help exits 0 and mentions 'compiled to binary'" {
+  run pnpm --help
+  [ "$status" -eq 0 ]
+  assert_output --partial "compiled to binary"
+}