Update docs/tech_docs/OpenWrt.md

docs/tech_docs/OpenWrt.md

@@ -123,4 +123,16 @@ Alpine Container (ID: 300):
 pct create 300 /var/lib/vz/template/cache/alpine-default-rootfs.tar.xz --unprivileged 1 --arch amd64 --ostype alpine --hostname alpine-0 --tag docker --storage local-lvm --cores 2 --memory 1024 --swap 256 --rootfs local-lvm:1,size=8G --net0 name=eth0,bridge=vmbr1,firewall=1
 ```
 
+```bash
+pct enter 300
+```
+
+```bash
+passwd
+```
+
+```bash
+pct console 300
+```
+
 ## Notes