Update CI workflow (#21)

.github/workflows/ci.yml

@@ -11,7 +11,13 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-      - uses: DeterminateSystems/flake-checker-action@v5
-      - uses: DeterminateSystems/nix-installer-action@v6
-      - run: nix run home-manager/master -- init --switch $GITHUB_WORKSPACE
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Check Nix flake inputs
+        uses: DeterminateSystems/flake-checker-action@v5
+      - name: Install Nix
+        uses: DeterminateSystems/nix-installer-action@v6
+      - name: Build configuration
+        run: nix run home-manager/master -- build --flake ${{ github.workspace }}
+      - name: Activate the configuration
+        run: ./result/activate

README.md

@@ -8,7 +8,7 @@ My [Home Manager](https://github.com/nix-community/home-manager) configuration.
 
 - Install Nix via [nix-installer](https://github.com/DeterminateSystems/nix-installer)
 
-Alternatively, use the official
+Alternatively, use the official Nix
 [installer](https://nixos.org/guides/install-nix.html) and enable
 [Flakes](https://nixos.wiki/wiki/Flakes).
 
@@ -20,12 +20,14 @@ Clone the repository:
 git clone https://github.com/sestrella/nix-darwin-config.git ~/.config/home-manager
 ```
 
-Activate the configuration:
+Active the configuration for the first time:
 
 ```
-nix run home-manager/master -- init --switch
+nix run home-manager/master -- switch
 ```
 
+**Note:** For future activations, run the `home-manager switch` command.
+
 ## Inspired By
 
 A list of projects that inspired me to write this one: