Add: gvisor container runtime

Signed-off-by: Nicolas Lamirault <nicolas.lamirault@gmail.com>

diagrams/onprem/container.py

@@ -20,6 +20,10 @@ class Docker(_Container):
     _icon = "docker.png"
 
 
+class Gvisor(_Container):
+    _icon = "gvisor.png"
+
+
 class Rkt(_Container):
     _icon = "rkt.png"
 

docs/nodes/onprem.md

@@ -58,6 +58,7 @@ Node classes list of onprem provider.
 - **diagrams.onprem.container.Containerd**
 - **diagrams.onprem.container.Crio**
 - **diagrams.onprem.container.Docker**
+- **diagrams.onprem.container.Gvisor**
 - **diagrams.onprem.container.Rkt**, **RKT** (alias)
 
 ## onprem.database