diff --git a/claude-code/.devcontainer/Dockerfile b/claude-code/.devcontainer/Dockerfile
index ab5e7e6..be49f4f 100644
--- a/claude-code/.devcontainer/Dockerfile
+++ b/claude-code/.devcontainer/Dockerfile
@@ -201,6 +201,8 @@ LABEL org.opencontainers.image.source="https://github.com/gatezh/devcontainer-im
       org.opencontainers.image.title="claude-code" \
       org.opencontainers.image.url="https://github.com/gatezh/devcontainer-images"
 
+CMD ["sleep", "infinity"]
+
 # ─── SANDBOX — network-restricted environment ─────────────────────────────────
 FROM base AS sandbox
 
@@ -229,3 +231,5 @@ LABEL org.opencontainers.image.source="https://github.com/gatezh/devcontainer-im
       org.opencontainers.image.licenses="MIT" \
       org.opencontainers.image.title="claude-code-sandbox" \
       org.opencontainers.image.url="https://github.com/gatezh/devcontainer-images"
+
+CMD ["sleep", "infinity"]