use newer kaniko plugin

.drone.yml

@@ -8,10 +8,10 @@ steps:
   commands:
     - apt update
     - apt install -y git
-    - git clone https://github.com/librespeed/speedtest-go.git .
+    - git clone https://github.com/librespeed/speedtest-go.git
 
 - name: kaniko
-  image: banzaicloud/drone-kaniko
+  image: plugins/kaniko
   settings:
     registry: registry.kmlabz.com
     repo: stargate-cluster/${DRONE_REPO_NAME}
@@ -19,6 +19,7 @@ steps:
       from_secret: DOCKER_USERNAME
     password:
       from_secret: DOCKER_PASSWORD
+    context: /drone/src/speedtest-go
     tags:
       - latest
       - ${DRONE_BUILD_NUMBER}