Update devcontainer config

Fix deprecation warnings

Author: sourcefrog

.devcontainer/devcontainer.json

@@ -1,57 +1,53 @@
 // For format details, see https://aka.ms/devcontainer.json. For config options, see the README at:
 // https://github.com/microsoft/vscode-dev-containers/tree/v0.238.1/containers/rust
 {
-	"name": "Rust",
-	"build": {
-		"dockerfile": "Dockerfile",
-		"args": {
-			// Use the VARIANT arg to pick a Debian OS version: buster, bullseye
-			// Use bullseye when on local on arm64/Apple Silicon.
-			"VARIANT": "bullseye"
-		}
-	},
-	"runArgs": [
-		"--cap-add=SYS_PTRACE",
-		"--security-opt",
-		"seccomp=unconfined"
-	],
+  "name": "Rust",
+  "build": {
+    "dockerfile": "Dockerfile",
+    "args": {
+      // Use the VARIANT arg to pick a Debian OS version: buster, bullseye
+      // Use bullseye when on local on arm64/Apple Silicon.
+      "VARIANT": "bullseye"
+    }
+  },
+  "runArgs": ["--cap-add=SYS_PTRACE", "--security-opt", "seccomp=unconfined"],
 
-	// Configure tool-specific properties.
-	"customizations": {
-		// Configure properties specific to VS Code.
-		"vscode": {
-			// Set *default* container specific settings.json values on container create.
-			"settings": { 
-				"lldb.executable": "/usr/bin/lldb",
-				// VS Code don't watch files under ./target
-				"files.watcherExclude": {
-					"**/target/**": true
-				},
-				"rust-analyzer.checkOnSave.command": "clippy"
-			},
-			
-			// Add the IDs of extensions you want installed when the container is created.
-			"extensions": [
-				"vadimcn.vscode-lldb",
-				"mutantdino.resourcemonitor",
-				"rust-lang.rust-analyzer",
-				"tamasfe.even-better-toml",
-				"serayuzgur.crates"
-			]
-		}
-	},
+  // Configure tool-specific properties.
+  "customizations": {
+    // Configure properties specific to VS Code.
+    "vscode": {
+      // Set *default* container specific settings.json values on container create.
+      "settings": {
+        "lldb.executable": "/usr/bin/lldb",
+        // VS Code don't watch files under ./target
+        "files.watcherExclude": {
+          "**/target/**": true
+        },
+        "rust-analyzer.checkOnSave.command": "clippy"
+      },
 
-	// Use 'forwardPorts' to make a list of ports inside the container available locally.
-	// "forwardPorts": [],
+      // Add the IDs of extensions you want installed when the container is created.
+      "extensions": [
+        "vadimcn.vscode-lldb",
+        "mutantdino.resourcemonitor",
+        "rust-lang.rust-analyzer",
+        "tamasfe.even-better-toml",
+        "serayuzgur.crates"
+      ]
+    }
+  },
 
-	// Use 'postCreateCommand' to run commands after the container is created.
-	// "postCreateCommand": "rustc --version",
+  // Use 'forwardPorts' to make a list of ports inside the container available locally.
+  // "forwardPorts": [],
 
-	// Comment out to connect as root instead. More info: https://aka.ms/vscode-remote/containers/non-root.
-	"remoteUser": "vscode",
-	"features": {
-		"git": "os-provided",
-		"github-cli": "latest",
-		"fish": "latest"
-	}
+  // Use 'postCreateCommand' to run commands after the container is created.
+  // "postCreateCommand": "rustc --version",
+
+  // Comment out to connect as root instead. More info: https://aka.ms/vscode-remote/containers/non-root.
+  "remoteUser": "vscode",
+  "features": {
+    "git": "os-provided",
+    "github-cli": "latest",
+    "ghcr.io/meaningful-ooo/devcontainer-features/fish:1": {}
+  }
 }