diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
new file mode 100644
index 000000000..ad93c14a0
--- /dev/null
+++ b/.devcontainer/devcontainer.json
@@ -0,0 +1,5 @@
+{
+  "image": "mcr.microsoft.com/devcontainers/universal:2",
+  "features": {
+  }
+}
diff --git a/test/openapi/README.md b/test/openapi/README.md
index e33c189ca..3da769964 100644
--- a/test/openapi/README.md
+++ b/test/openapi/README.md
@@ -1,4 +1,4 @@
-## Using custom OpenAPI specification and fixtures files
+*## Using custom OpenAPI specification and fixtures files
 
 You can place custom OpenAPI specification and fixtures files in this
 directory. The files must be in JSON format, and must be named `spec3.json`
@@ -7,3 +7,4 @@ and `fixtures3.json` respectively.
 If those files are present, the test suite will start its own stripe-mock
 process on a random available port. In order for this to work, `stripe-mock`
 must be on the `PATH` in the environment used to run the test suite.
+*