Fix ENV usage warning.

edespino · tuhaihe · commit abf1d523bb5a · 2024-07-19T17:21:20.000+08:00
diff --git a/000-cbdb-sandbox/Dockerfile.main.rockylinux9 b/000-cbdb-sandbox/Dockerfile.main.rockylinux9
@@ -2,7 +2,7 @@ FROM rockylinux/rockylinux:9
 
 ARG TIMEZONE_VAR="Asia/Shanghai"
 
-ENV container docker
+ENV container=docker
 
 RUN dnf update -y && \
     dnf install -y systemd \
