diff --git a/.gitignore b/.gitignore
index 3b1a2dc..6c180c6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -10,4 +10,6 @@ bin/
 *.exe
 
 *.pem
-*.http
\ No newline at end of file
+*.http
+
+*/playground/
\ No newline at end of file
diff --git a/Dockerfile b/Dockerfile
index 984d162..6032625 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -20,6 +20,8 @@ FROM ubuntu:24.04
 
 WORKDIR /app
 
+RUN apt-get update && apt-get install -y ca-certificates
+
 # 从构建阶段复制编译好的二进制文件
 COPY --from=builder /build/bin/platform_linux_amd64 /app/platform
 
diff --git a/cmd/playground/main.go b/cmd/playground/main.go
deleted file mode 100644
index 7905807..0000000
--- a/cmd/playground/main.go
+++ /dev/null
@@ -1,5 +0,0 @@
-package main
-
-func main() {
-
-}