Revert "feat: replace container usage with install-nix-action"

This reverts commit 0da4870.

Author: brynblack

.github/workflows/library-js-feature.yml

@@ -8,13 +8,13 @@ jobs:
   feature-lint:
     name: "Feature / Lint"
     runs-on: ubuntu-latest
+    container:
+      image: ghcr.io/matrixai/github-runner
     permissions:
       packages: read
       contents: read
     steps:
       - uses: actions/checkout@v4
-      - name: Install Nix
-        uses: cachix/install-nix-action@v30
       - name: Run linting
         run: |
           nix develop .#ci --command bash -c $'
@@ -25,14 +25,14 @@ jobs:
   feature-build:
     name: "Feature / Build"
     runs-on: ubuntu-latest
+    container:
+      image: ghcr.io/matrixai/github-runner
     permissions:
       packages: read
       contents: read
       actions: write
     steps:
       - uses: actions/checkout@v4
-      - name: Install Nix
-        uses: cachix/install-nix-action@v30
       - name: Run build
         run: |
           nix develop .#ci --command bash -c $'
@@ -48,15 +48,15 @@ jobs:
   feature-test:
     name: "Feature / Test"
     runs-on: ubuntu-latest
+    container:
+      image: ghcr.io/matrixai/github-runner
     permissions:
       packages: read
       contents: read
       actions: write
       checks: write
     steps:
       - uses: actions/checkout@v4
-      - name: Install Nix
-        uses: cachix/install-nix-action@v30
       - name: Run tests
         run: |
           nix develop .#ci --command bash -c $'
@@ -83,14 +83,14 @@ jobs:
   feature-bench:
     name: "Feature / Bench"
     runs-on: ubuntu-latest
+    container:
+      image: ghcr.io/matrixai/github-runner
     permissions:
       packages: read
       contents: read
       actions: write
     steps:
       - uses: actions/checkout@v4
-      - name: Install Nix
-        uses: cachix/install-nix-action@v30
       - name: Run bench
         run: |
           nix develop .#ci --command bash -c $'