Docker building and various fixes around the code.

.drone.yml

@@ -0,0 +1,60 @@
+---
+kind: pipeline
+type: docker
+name: build
+
+steps:
+  - name: notify-start
+    image: pztrn/discordrone
+    settings:
+      webhook_id:
+        from_secret: discord_webhook_id
+      webhook_token:
+        from_secret: discord_webhook_secret
+      message: 'Starting building **{{repo.name}}#{{build.number}}@{{commit.sha}}** @ {{datetime build.started "02-Jan-2006 15:04:05 MST" "Asia/Yekaterinburg"}} (See {{build.link}} for logs).'
+
+  - name: lint
+    image: golangci/golangci-lint:latest
+    environment:
+      CGO_ENABLED: 0
+    commands:
+      - golangci-lint run
+
+  - name: test
+    image: golang:1.13.1-alpine
+    environment:
+      GOFLAGS: -mod=vendor
+      CGO_ENABLED: 0
+    commands:
+      - go test ./...
+
+  - name: docker
+    image: plugins/docker
+    when:
+      branch:
+        master
+    settings:
+      username:
+        from_secret: dockerhub_user
+      password:
+        from_secret: dockerhub_password
+      repo: pztrn/discordrone
+      auto_tag: true
+
+  - name: notify-end
+    when:
+      status:
+      - success
+      - failure
+    image: pztrn/discordrone
+    settings:
+      webhook_id:
+        from_secret: discord_webhook_id
+      webhook_token:
+        from_secret: discord_webhook_secret
+      message: "
+        {{#success build.status}}
+          **{{repo.name}}#{{build.number}}@{{commit.sha}}** built in {{since build.started}} and pushed to hub.docker.com.
+        {{ else }}
+          **{{repo.name}}#{{build.number}}@{{commit.sha}}** failed. See {{build.link}}.
+        {{/success}}"