Update 3 files

- /main.go
- /.drone.yml
- /go.mod

.drone.yml

@@ -0,0 +1,17 @@
+workspace:
+  base: /srv/drone-demo
+  path: .
+
+pipeline:
+  build:
+     image: golang:alpine
+     # pull: true
+     environment:
+       - KEY=VALUE
+     secrets: [key1, key2]
+     commands:
+       - echo $$KEY
+       - pwd
+       - ls
+       - go build -o app .
+       - ./app

go.mod

@@ -0,0 +1,3 @@
+module drone-demo
+
+go 1.17

main.go

@@ -0,0 +1,7 @@
+package main
+
+import "fmt"
+
+func main() {
+    fmt.Printf("Hello World!");
+}