Update .devcontainer/devcontainer.json

Signed-off-by: Derek Lewis <[email protected]>

.devcontainer/devcontainer.json

@@ -7,7 +7,7 @@
   "name": "Docker outside of Docker",
   // Or use a Dockerfile or Docker Compose file.
   // More info: https://containers.dev/guide/dockerfile
-  "image": "mcr.microsoft.com/devcontainers/javascript-node:18-bullseye",
+  "image": "docker.io/openinf/centos7-fisher:latest",
 
   "features": {
     "ghcr.io/devcontainers/features/docker-outside-of-docker:1": {