磁盘空间太大

flutter/.devcontainer/Dockerfile-3.7.7

@@ -2,7 +2,8 @@
 
 # [Choice] Java version: 11, 16
 ARG VARIANT="16"
-FROM mcr.microsoft.com/vscode/devcontainers/java:0-${VARIANT}
+#FROM mcr.microsoft.com/vscode/devcontainers/java:0-${VARIANT}
+FROM mcr.microsoft.com/devcontainers/universal:2.4.0-focal
 
 # [Option] Install Maven
 ARG INSTALL_MAVEN="false"