Remove unused nix image variant

.github/workflows/build.yml

@@ -58,65 +58,6 @@ jobs:
           subject-digest: ${{ steps.push.outputs.digest }}
           push-to-registry: true
 
-  build-nix:
-    runs-on: ubuntu-latest
-    permissions:
-      contents: read
-      packages: write
-      attestations: write
-      id-token: write
-
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v6
-
-      - name: Install Nix
-        uses: cachix/install-nix-action@v31
-        with:
-          extra_nix_config: |
-            experimental-features = nix-command flakes
-
-      - name: Cache Nix store
-        uses: actions/cache@v5
-        with:
-          path: |
-            /nix/store
-            ~/.cache/nix
-          key: nix-${{ runner.os }}-${{ hashFiles('images/nix/flake.lock') }}
-          restore-keys: |
-            nix-${{ runner.os }}-
-
-      - name: Generate flake.lock if missing
-        run: |
-          if [ ! -f images/nix/flake.lock ]; then
-            nix flake lock ./images/nix
-          fi
-
-      - name: Build Docker image with Nix
-        run: nix build ./images/nix#dockerImage
-
-      - name: Log in to the Container registry
-        uses: docker/login-action@v4
-        with:
-          registry: ${{ env.REGISTRY }}
-          username: ${{ github.actor }}
-          password: ${{ secrets.GITHUB_TOKEN }}
-
-      - name: Load and push Docker image
-        id: push
-        run: |
-          docker load < result
-          docker push ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:nix
-          digest=$(docker inspect --format='{{index .RepoDigests 0}}' ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:nix | cut -d@ -f2)
-          echo "digest=$digest" >> "$GITHUB_OUTPUT"
-
-      - name: Generate artifact attestation
-        uses: actions/attest-build-provenance@v4
-        with:
-          subject-name: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
-          subject-digest: ${{ steps.push.outputs.digest }}
-          push-to-registry: true
-
   build-variants:
     needs: build-base
     runs-on: ubuntu-latest

.github/workflows/ci.yml

@@ -23,38 +23,6 @@ jobs:
           docker run --rm test-base sops --version
           docker run --rm test-base age --version
 
-  check-nix:
-    if: github.event_name == 'pull_request'
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v6
-
-      - name: Install Nix
-        uses: cachix/install-nix-action@v31
-        with:
-          extra_nix_config: |
-            experimental-features = nix-command flakes
-
-      - name: Cache Nix store
-        uses: actions/cache@v5
-        with:
-          path: |
-            /nix/store
-            ~/.cache/nix
-          key: nix-${{ runner.os }}-${{ hashFiles('images/nix/flake.lock') }}
-          restore-keys: |
-            nix-${{ runner.os }}-
-
-      - name: Generate flake.lock if missing
-        run: |
-          if [ ! -f images/nix/flake.lock ]; then
-            nix flake lock ./images/nix
-          fi
-
-      - name: Build nix image
-        run: nix build ./images/nix#dockerImage
-
   check-devops:
     if: github.event_name == 'pull_request'
     runs-on: ubuntu-latest

README.md

@@ -7,7 +7,6 @@ Base images for Coder workspaces.
 | Image | Tag | Contents |
 |-------|-----|----------|
 | Base | `:base` | Ubuntu Noble + bash, bash-completion, git, curl, Node.js 24, gh CLI, tea CLI, ripgrep, fd-find, tmux, build-essential, age, sops, ssh-to-age |
-| Nix | `:nix` | Nix-built image + bash, bash-completion, git, curl, Node.js, gh CLI, ripgrep, fd, tmux, gcc, make, sops, age, nix, direnv, nix-direnv, nix-ld |
 | DevOps | `:devops` | Base + Terraform, Packer, tflint, azcopy |
 
 ## Usage
@@ -16,9 +15,6 @@ Base images for Coder workspaces.
 # Base image
 FROM ghcr.io/plumelo/coder-images:base
 
-# Nix image (includes nix, direnv, nix-ld)
-FROM ghcr.io/plumelo/coder-images:nix
-
 # DevOps image (includes Terraform, Packer, tflint)
 FROM ghcr.io/plumelo/coder-images:devops
 ```
@@ -53,10 +49,6 @@ docker build -t test-base ./images/base
 # Build variant using local base
 docker build --build-arg BASE_IMAGE=test-base -t test-devops ./images/devops
 
-# Build nix image (requires nix with flakes enabled)
-nix build ./images/nix#dockerImage
-docker load < result
-
 # Verify tools
 docker run --rm test-base sops --version
 docker run --rm test-base age --version