Add CI and related fixes (#1)

Reviewed-on: #1
Co-authored-by: Juanjo Gutiérrez <juanjo@gutierrezdequevedo.com>
Co-committed-by: Juanjo Gutiérrez <juanjo@gutierrezdequevedo.com>

.drone.yml

@@ -0,0 +1,36 @@
+---
+kind: pipeline
+type: docker
+name: default
+
+steps:
+- name: docker image build
+  image: plugins/docker
+  settings:
+    tags:
+      - latest
+    repo: docker.gutierrezdequevedo.com/ps/model-viewer
+
+---
+kind: pipeline
+type: docker
+name: notification
+
+depends_on:
+- default
+
+steps:
+- name: notify matrix
+  image: spotlightkid/drone-matrixchat-notify
+  settings:
+    homeserver: 'https://grava.work'
+    roomid: '!wMVeFx6jwwF0TWA18h:grava.work'
+    userid: '@juanjo:grava.work'
+    deviceid: 'drone CI'
+    accesstoken: G66FRa3fG7qNfM4KKoW5wx6TWophvvtF
+    markdown: 'yes'
+    template: |
+      `${DRONE_REPO}` build #${DRONE_BUILD_NUMBER} status: **${DRONE_BUILD_STATUS}**
+
+      [${DRONE_BUILD_LINK}]
+