Cleaned up devcontainers config to use prebuilt image

.devcontainer/devcontainer.json

@@ -1,22 +1,7 @@
 // For format details, see https://aka.ms/devcontainer.json. For config options, see the
 // README at: https://github.com/devcontainers/templates/tree/main/src/docker-existing-dockerfile
 {
-	"name": "Existing Dockerfile",
+	"image": "gitea.shrukanslab.xyz/sl-devs/meson-build",
-	"build": {
-		// Sets the run context to one level up instead of the .devcontainer folder.
-		"context": "..",
-		// Update the 'dockerFile' property if you aren't using the standard 'Dockerfile' filename.
-		"dockerfile": "../Dockerfile"
-	},
-
-	// Features to add to the dev container. More info: https://containers.dev/features.
-	// "features": {},
-
-	// Use 'forwardPorts' to make a list of ports inside the container available locally.
-	// "forwardPorts": [],
-
-	// The basic image doesn't have or need git, but we do to work in it
-	"postCreateCommand": "apt-get install -y git",
 
 	// Configure tool-specific properties.
 	"customizations": {
@@ -30,7 +15,4 @@
 						   "eamodio.gitlens"]
 		}
 	}
-
-	// Uncomment to connect as an existing user other than the container default. More info: https://aka.ms/dev-containers-non-root.
-	// "remoteUser": "devcontainer"
 }