Updated drone recipe

.drone.yml

@@ -2,17 +2,23 @@ pipeline:
   download:
     image: plugins/download
     source: https://buildroot.org/downloads/buildroot-2018.02.2.tar.gz
-  build:
-    image: sublimino/debian-build-essential
+  fixperm:
+    image: debian
     commands:
-      - tar xvzf buildroot-2018.02.2.tar.gz
+      - mkdir builddir
+      - chown 1000:1000 builddir
+  build:
+    image: buildroot/base:20180318.1724
+    commands:
+      - cd builddir
+      - tar xvzf ../buildroot-2018.02.2.tar.gz
       - cd buildroot-2018.02.2
-      - make BR2_EXTERNAL=../ ttngw_defconfig
+      - make BR2_EXTERNAL=../../ ttngw_defconfig
       - make
   publish:
     image: plugins/gitea-release
     secrets: [ gitea_token ]
     base_url: https://dev.a-toy.eu
-    files: output/images/sdcard.img
+    files: builddir/buildroot-2018.02.2/output/images/sdcard.img
     when:
       event: tag