fix devcontainer build process

.devcontainer.json

@@ -6,7 +6,7 @@
         "context": "..",
         "dockerfile": "containers/dev/devcontainer/Dockerfile",
         "args": {
-            "VARIANT": "1.16",
+            "VERSION": "1.16",
         }
     },
 

containers/dev/devcontainer/BASE

@@ -0,0 +1 @@
+1.16

containers/dev/devcontainer/Dockerfile

@@ -1,5 +1,5 @@
-ARG VARIANT="1.16"
-FROM mcr.microsoft.com/vscode/devcontainers/go:0-${VARIANT}
+ARG VERSION="1.16"
+FROM mcr.microsoft.com/vscode/devcontainers/go:0-${VERSION}
 
 ARG HELM_VERSION="3.5.4"
 ARG CT_VERSION=3.3.1

containers/dev/devcontainer/VERSION

@@ -0,0 +1 @@
+1.16

containers/dev/devcontainer/latest-base.sh

@@ -0,0 +1,3 @@
+#!/usr/bin/env bash
+
+printf "%s" "1.16"

containers/dev/devcontainer/latest-version.sh

@@ -0,0 +1,3 @@
+#!/usr/bin/env bash
+
+printf "%s" "1.16"