Declare the vault service port and bound integration HTTP calls

.woodpecker/integration.yaml

@@ -6,6 +6,10 @@ when:
 services:
   - name: vault
     image: hashicorp/vault:1.20
+    # The kubernetes backend builds the Service from this list; without it the
+    # service resolves but carries no port.
+    ports:
+      - 8200
     environment:
       # Throwaway dev-mode server; this token grants nothing outside this pod.
       VAULT_DEV_ROOT_TOKEN_ID: dev-root-token

integration_test.go

@@ -50,6 +50,10 @@ func itVaultToken() string {
 	return "root"
 }
 
+// Every call is bounded so an unreachable server fails the suite instead of
+// hanging a CI step on a blackholed connect.
+var itClient = &http.Client{Timeout: 15 * time.Second}
+
 func itWaitForVault(t *testing.T) {
 	t.Helper()
 
@@ -57,7 +61,11 @@ func itWaitForVault(t *testing.T) {
 	url := itVaultAddr() + "/v1/sys/health?standbyok=true"
 	var last error
 	for time.Now().Before(deadline) {
-		resp, err := http.Get(url) // #nosec G107
+		req, err := http.NewRequest(http.MethodGet, url, nil)
+		if err != nil {
+			t.Fatalf("building health request: %v", err)
+		}
+		resp, err := itClient.Do(req)
 		if err == nil {
 			_ = resp.Body.Close()
 			if resp.StatusCode == http.StatusOK {
@@ -91,7 +99,7 @@ func itVaultAPI(t *testing.T, method, path string, body any) map[string]any {
 	req.Header.Set("X-Vault-Token", itVaultToken())
 	req.Header.Set("Content-Type", "application/json")
 
-	resp, err := http.DefaultClient.Do(req)
+	resp, err := itClient.Do(req)
 	if err != nil {
 		t.Fatalf("%s %s: %v", method, path, err)
 	}