diff --git a/Dockerfile b/Dockerfile
index eb3f9a6..36e827c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM base
+FROM base AS run
 
 # Libuv 1.45.0 is affected by a kernel bug on certain kernels.
 # This leads to errors where Garden tool downloading errors with ETXTBSY
@@ -49,3 +49,12 @@ RUN npm install -g pnpm@10
 USER skpr
 
 ENV PATH /data/node_modules/.bin:$PATH
+
+# Temporary build stage where we can run the test suite.
+FROM run AS test
+COPY --from=ghcr.io/goss-org/goss:latest /usr/bin/goss /usr/bin/goss
+ADD goss.yml /etc/goss/goss.yml
+RUN goss --gossfile=/etc/goss/goss.yml validate
+
+# Swap back to the run stage.
+FROM run
diff --git a/goss.yml b/goss.yml
new file mode 100644
index 0000000..23ae89f
--- /dev/null
+++ b/goss.yml
@@ -0,0 +1,18 @@
+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.yml b/tests.yml
deleted file mode 100644
index 4b6856f..0000000
--- a/tests.yml
+++ /dev/null
@@ -1,20 +0,0 @@
-schemaVersion: '2.0.0'
-
-commandTests:
-  - name:  "npm"
-    command: "npm"
-    args: ["--help"]
-    expectedOutput: ["DISCLAIMER"]
-    exitCode: 1
-
-  - name:  "yarn"
-    command: "yarn"
-    args: ["--help"]
-    expectedOutput: ["DISCLAIMER"]
-    exitCode: 0
-
-  - name:  "pnpm"
-    command: "pnpm"
-    args: ["--help"]
-    expectedOutput: ["compiled to binary"]
-    exitCode: 0