Drone file: Convert via "drone convert"

& get isort from the "odoo" branch of xcgd/isort.

.drone.yml

+kind: pipeline
+name: default
+
+platform:
+  os: linux
+  arch: amd64
+
 clone:
@@ -1,4 +8,14 @@
 clone:
-  hg:
-    image: plugins/hg
+  disable: true
+
+steps:
+- name: hg
+  pull: default
+  image: plugins/hg
+
+- name: flake8
+  pull: always
+  image: alpine/flake8
+  commands:
+  - flake8
 
@@ -4,14 +21,13 @@
 
-pipeline:
-  linter:
-    image: alpine/flake8
-    commands:
-      - flake8
-  isort:
-    image: xcgd/isort
-    commands:
-      - isort -c -df
-  docker:
-    image: plugins/docker
-    secrets: [docker_username, docker_password]
+- name: isort
+  pull: always
+  image: xcgd/isort:odoo
+  commands:
+  - isort -c -df
+
+- name: docker
+  pull: default
+  image: plugins/docker
+  settings:
+    dockerfile: Dockerfile.docker_build_copy
     repo: xcgd/odoo_scripts-docker_build_copy
@@ -17,3 +33,2 @@
     repo: xcgd/odoo_scripts-docker_build_copy
-    dockerfile: Dockerfile.docker_build_copy
     tag: latest
@@ -19,5 +34,13 @@
     tag: latest
-  mattermost:
-    image: plugins/slack
+  environment:
+    DOCKER_PASSWORD:
+      from_secret: docker_password
+    DOCKER_USERNAME:
+      from_secret: docker_username
+
+- name: mattermost
+  pull: default
+  image: plugins/slack
+  settings:
     channel: dev
     username: drone
@@ -22,6 +45,9 @@
     channel: dev
     username: drone
-    secrets: [ slack_webhook ]
-    when:
-      status: [ failure, success ]
-
+  environment:
+    SLACK_WEBHOOK:
+      from_secret: slack_webhook
+  when:
+    status:
+    - failure
+    - success