add better logs

knecht/portainer/client.go

@@ -38,6 +38,29 @@ type StackFile struct {
 	StackFileContent string `json:"StackFileContent"`
 }
 
+type Container struct {
+	ID    string   `json:"Id"`
+	Names []string `json:"Names"`
+}
+
+// FindContainer returns the container ID for a given name (e.g. "seerr").
+// Docker container names have a leading slash, so "/seerr" matches "seerr".
+func (c *Client) FindContainer(name string) (string, error) {
+	var containers []Container
+	if err := c.get(fmt.Sprintf("/api/endpoints/%d/docker/containers/json", c.endpointID), &containers); err != nil {
+		return "", err
+	}
+	want := "/" + name
+	for _, ct := range containers {
+		for _, n := range ct.Names {
+			if n == want {
+				return ct.ID, nil
+			}
+		}
+	}
+	return "", fmt.Errorf("container %q not found", name)
+}
+
 func New(baseURL, token, endpointName string) (*Client, error) {
 	c := &Client{
 		baseURL:    strings.TrimRight(baseURL, "/"),