Changed to use GantSign devcontainer image (gantsign#199)

Saves a lot of time building it.

Author: freemanjp

.devcontainer/devcontainer.json

@@ -2,26 +2,7 @@
 // README at: https://github.com/devcontainers/templates/tree/main/src/python
 {
 	"name": "ansible-role-golang",
-	"image": "mcr.microsoft.com/devcontainers/python:0-3.9",
-	"features": {
-		"ghcr.io/devcontainers/features/common-utils:2": {
-			"installZsh": true,
-			"configureZshAsDefaultShell": true,
-			"installOhMyZsh": true
-		},
-		"ghcr.io/devcontainers/features/docker-in-docker:2": {},
-		"ghcr.io/devcontainers/features/github-cli:1": {},
-		"ghcr.io/devcontainers-contrib/features/apt-get-packages:1": {
-			"packages": "fzf grc zoxide"
-		},
-		"ghcr.io/devcontainers-contrib/features/fd:1": {},
-		"ghcr.io/devcontainers-contrib/features/ripgrep:1": {},
-		"ghcr.io/devcontainers-contrib/features/starship:1": {},
-		"ghcr.io/devcontainers-contrib/features/zsh-plugins:0": {
-			"plugins": "autopep8 dirhistory docker fd fzf git-escape-magic gh git grc pip pipenv ripgrep starship sudo zoxide zsh-autosuggestions zsh-syntax-highlighting",
-			"omzPlugins": "https://github.com/zsh-users/zsh-autosuggestions https://github.com/zsh-users/zsh-syntax-highlighting.git"
-		}
-	},
+	"image": "ghcr.io/gantsign/devcontainer-python3.9:latest",
 	"customizations": {
 		"vscode": {
 			"extensions": [
@@ -32,6 +13,7 @@
 				"GitHub.vscode-pull-request-github",
 				"ldez.ignore-files",
 				"me-dutour-mathieu.vscode-github-actions",
+				"mhutchie.git-graph",
 				"oderwat.indent-rainbow",
 				"redhat.ansible",
 				"streetsidesoftware.code-spell-checker",