Added Dockerfile & beginning of vweb server

vieter/fibonacci.v

@@ -0,0 +1,9 @@
+module fibonacci
+
+pub fn fib(i int) int {
+	if i <= 1 {
+		return i
+	}
+
+	return fib(i - 1) + fib(i - 2)
+}

vieter/main.v

@@ -0,0 +1,37 @@
+module main
+
+import vweb
+import os
+
+const port = 8000
+
+struct App {
+	vweb.Context
+	api_key  string [required]
+	repo_dir string [required]
+}
+
+[noreturn]
+fn exit_with_message(code int, msg string) {
+	eprintln(msg)
+	exit(code)
+}
+
+fn main() {
+	key := os.getenv_opt('API_KEY') or { exit_with_message(1, 'No API key was provided.') }
+	repo_dir := os.getenv_opt('REPO_DIR') or {
+		exit_with_message(1, 'No repo directory was configured.')
+	}
+
+	// We create the upload directory during startup
+	if !os.is_dir(repo_dir) {
+		os.mkdir_all(repo_dir) or { exit_with_message(2, 'Failed to create repo directory.') }
+
+		println('Repo directory created.')
+	}
+
+	vweb.run(&App{
+		api_key: key
+		repo_dir: repo_dir
+	}, port)
+}