Add downstream triggering, change builder image

.drone.yml

@@ -32,3 +32,14 @@ pipeline:
       - docker tag devbuild adamant/busybox:latest
       - docker tag devbuild adamant/busybox:1.1
       - docker push adamant/busybox
+  
+  downstream:
+    image: plugins/downstream
+    secrets: [ DOWNSTREAM_TOKEN ]
+    server: https://drone.adam-ant.co.uk
+    fork: true
+    repositories:
+      - Adam-Ant/docker-busybox-base@libressl
+    when:
+      event:  [ push, tag, deployment]
+      status: [ success ]

Dockerfile

@@ -1,4 +1,4 @@
-FROM debian:stretch-slim as builder
+FROM frebib/debian-builder as builder
 
 ARG ARCH=x86_64
 ARG ARCH_ALT=i686