Publish nix docker image.

.github/workflows/nix_build.yaml

@@ -0,0 +1,50 @@
+name: "Nix Tests"
+on:
+  pull_request:
+    paths:
+      - ".github/workflows/nix_build.yaml"
+      - "server/**"
+      - "proto/**"
+      - "router/**"
+      - "launcher/**"
+      - "nix/**"
+      - "Cargo.lock"
+      - "rust-toolchain.toml"
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
+jobs:
+  tests:
+    runs-on:
+      group: aws-highmemory-32-plus-priv
+    steps:
+    - uses: actions/checkout@v4
+    - uses: cachix/install-nix-action@v27
+      with:
+        nix_path: nixpkgs=channel:nixos-unstable
+    - uses: cachix/cachix-action@v14
+      with:
+        name: text-generation-inference
+        # If you chose signing key for write access
+        authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
+      env:
+        USER: github_runner
+    - name: Build
+      run: nix build .#dockerImage
+    - name: Initialize Docker Buildx
+      uses: docker/setup-buildx-action@v3
+      with:
+        install: true
+        buildkitd-config: /tmp/buildkitd.toml
+    - name: Login to internal Container Registry
+      # if: github.event_name != 'pull_request'
+      uses: docker/login-action@v3
+      with:
+        username: ${{ secrets.REGISTRY_USERNAME }}
+        password: ${{ secrets.REGISTRY_PASSWORD }}
+        registry: registry.internal.huggingface.tech
+    - name: Push to docker
+      run: |
+        docker load < ./result
+        docker tag tgi-docker registry.internal.huggingface.tech/api-inference/community/text-generation-inference:nix-test