Support specifying password via environment variable

main.go

@@ -6,6 +6,7 @@ import (
 	"log"
 	"net/http"
 	_ "net/http/pprof"
+	"os"
 	"time"
 
 	"code.rocket9labs.com/tslocum/bgammon-tabula-bot/bot"
@@ -36,6 +37,10 @@ func main() {
 	flag.IntVar(&debug, "debug", 0, "Port to serve debug information on (pprof)")
 	flag.Parse()
 
+	if password == "" {
+		password = os.Getenv("BOT_PASSWORD")
+	}
+
 	if debug > 0 {
 		go func() {
 			log.Fatal(http.ListenAndServe(fmt.Sprintf("localhost:%d", debug), nil))