feat(dev): Setup devcontainer

.devcontainer/Dockerfile

@@ -0,0 +1 @@
+FROM ghcr.io/xtruder/nix-devcontainer:v1

.devcontainer/devcontainer.json

@@ -0,0 +1,51 @@
+// For format details, see https://aka.ms/vscode-remote/devcontainer.json or the definition README at
+// https://github.com/microsoft/vscode-dev-containers/tree/master/containers/docker-existing-dockerfile
+{
+    "name": "devcontainer-project",
+    "dockerFile": "Dockerfile",
+    "context": "${localWorkspaceFolder}",
+    "build": {
+      "args": {
+        "USER_UID": "${localEnv:USER_UID}",
+        "USER_GID": "${localEnv:USER_GID}"
+      },
+    },
+  
+    // run arguments passed to docker
+    "runArgs": [
+      "--security-opt", "label=disable"
+    ],
+  
+    "containerEnv": {
+       // extensions to preload before other extensions
+      "PRELOAD_EXTENSIONS": "arrterian.nix-env-selector"
+    },
+  
+     // disable command overriding and updating remote user ID
+    "overrideCommand": false,
+    "userEnvProbe": "loginShell",
+    "updateRemoteUserUID": false,
+  
+    // build development environment on creation, make sure you already have shell.nix
+    "onCreateCommand": "nix develop",
+  
+    // Add the IDs of extensions you want installed when the container is created.
+    "customizations": {
+        "vscode": {
+            "extensions": [
+                // select nix environment
+                "arrterian.nix-env-selector",
+            
+                // extra extensions
+                //"fsevenm.run-it-on",
+                "jnoortheen.nix-ide"
+            ]
+        }
+    },
+  
+    // Use 'forwardPorts' to make a list of ports inside the container available locally.
+    "forwardPorts": []
+  
+    // Use 'postCreateCommand' to run commands after the container is created.
+    // "postCreateCommand": "go version",
+  }

flake.nix

@@ -52,9 +52,8 @@
             }
           );
 
-          # Base dev shell
           devenv.shells.default = {
-            imports = [ "${self}/shells/base.nix" ];
+            imports = [ "${self}/shells/nix.nix" ];
           };
 
           formatter = pkgs.nixfmt-rfc-style;

shells/base.nix

@@ -1,4 +0,0 @@
-{ ... }:
-{
-
-}

shells/nix.nix

@@ -0,0 +1,8 @@
+{ pkgs, ... }:
+{
+  languages.nix.enable = true;
+
+  packages = [
+    nixfmt-rfc-style
+  ];
+}