Strip all env vars starting with DISPATCH_

cli/run.go

@@ -85,14 +85,15 @@ Run 'dispatch help run' to learn about Dispatch sessions.`, BridgeSession)
 			cmd.Stdout = os.Stdout
 			cmd.Stderr = os.Stderr
 
-			// Pass on environment variables to the local application.
-			// Pass on the configured API key, and set a special endpoint
-			// URL for the session. Unset the verification key, so that
-			// it doesn't conflict with the session. A verification key
-			// is not required here, since function calls are retrieved
-			// from an authenticated API endpoint.
+			// Pass on environment variables to the local application. Pass on the
+			// configured API key, and set a special endpoint URL for the session.
+			// Unset all DISPATCH_* environment variables, which includes overrides for
+			// the CLI and also the verification key (DISPATCH_VERIFICATION_KEY), so
+			// that they don't conflict with the session. Note that a verification key
+			// is not required here, since function calls are retrieved from an
+			// authenticated API endpoint.
 			cmd.Env = append(
-				withoutEnv(os.Environ(), "DISPATCH_VERIFICATION_KEY="),
+				withoutEnv(os.Environ(), "DISPATCH_"),
 				"DISPATCH_API_KEY="+DispatchApiKey,
 				"DISPATCH_ENDPOINT_URL=bridge://"+BridgeSession,
 			)