drone: source buildrone key from drone in docker build

.drone.yml

@@ -131,6 +131,9 @@ steps:
       volumes:
           - name: ssh_key
             path: /root/drone_rsa
+      environment:
+          BUILDRONE_KEY:
+              from_secret: BUILDRONE_KEY
       settings:
           host:
               from_secret: ssh2_host
@@ -140,13 +143,15 @@ steps:
               from_secret: ssh2_port
           volumes:
               - /root/.ssh/docker-build:/root/drone_rsa
+          envs:
+              - buildrone_key
           key_path: /root/drone_rsa
           command_timeout: 50m
           script:
               - /mnt/buildx/jfa-go/build.sh
               - wget https://builds.hrfee.pw/upload.py -O /mnt/buildx/jfa-go/jfa-go/upload.py
               - pip3 install requests
-              - bash -c 'cd /mnt/buildx/jfa-go/jfa-go && BUILDRONE_KEY=$(cat /mnt/buildx/jfa-go/key) python3 upload.py https://builds.hrfee.pw hrfee jfa-go --tag docker-unstable=true'
+              - bash -c 'cd /mnt/buildx/jfa-go/jfa-go && python3 upload.py https://builds.hrfee.pw hrfee jfa-go --tag docker-unstable=true'
               - rm -f /mnt/buildx/jfa-go/jfa-go/upload.py
 trigger:
     branch:

updater.go

@@ -161,6 +161,7 @@ func newUpdater(buildroneURL, namespace, repo, version, commit, buildType string
 	if runtime.GOOS == "windows" {
 		binary += ".exe"
 	}
+	fmt.Println("monitoring", tag)
 	return &Updater{
 		httpClient:     &http.Client{Timeout: 10 * time.Second},
 		timeoutHandler: common.NewTimeoutHandler("updater", buildroneURL, true),
@@ -211,7 +212,7 @@ func (ud *Updater) GetTag() (Tag, int, error) {
 	var tag Tag
 	err = json.Unmarshal(body, &tag)
 	if tag.Version == "" {
-		err = errors.New("Tag was empty")
+		err = errors.New("Tag at \"" + url + "\" was empty")
 	}
 	return tag, resp.StatusCode, err
 }