Add Drone build pipeline

.drone.yml

@@ -0,0 +1,40 @@
+---
+kind: pipeline
+type: docker
+name: default
+
+steps:
+- name: submodules
+  image: alpine/git
+  commands:
+  - git submodule update --init --recursive
+
+- name: build
+  image: alpine/helm
+  volumes:
+  - name: result
+    path: /output
+  commands:
+  - helm lint --set redis.enabled=false
+  - helm package -d chart .
+  - mv chart/glitchtip*.tgz /output/glitchtip.tgz
+
+- name: upload
+  image: curlimages/curl:latest
+  environment:
+    GIT_HOST: git.kurocon.nl
+    GIT_PACKAGE_OWNER: KuroNET
+    GIT_USER:
+      from_secret: git_username
+    GIT_TOKEN:
+      from_secret: git_password_or_token
+  volumes:
+  - name: result
+    path: /output
+  commands:
+  - curl --user $GIT_USER:$GIT_TOKEN -X POST --upload-file /output/glitchtip.tgz https://$GIT_HOST/api/packages/{$GIT_PACKAGE_OWNER}/helm/api/charts
+
+
+volumes:
+- name: result
+  temp: {}