diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 0000000..8db6eb5
--- /dev/null
+++ b/.github/dependabot.yml
@@ -0,0 +1,8 @@
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    commit-message:
+      prefix: "deps(actions)"
diff --git a/.github/workflows/check-commit.yml b/.github/workflows/check-commit.yml
deleted file mode 100644
index 87d00a0..0000000
--- a/.github/workflows/check-commit.yml
+++ /dev/null
@@ -1,31 +0,0 @@
-name: Get latest commit
-on:
-  workflow_dispatch:
-  schedule:
-    - cron: '0 0 * * *'
-
-jobs:
-  get-commit:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v3.3.0
-      - name: Fetch packwiz commit
-        run: |
-          curl -sL https://api.github.com/repos/packwiz/packwiz/commits | jq .[0].sha > current_commit.txt
-      - name: Check for new commit
-        id: git-check
-        run: |
-          echo ::set-output name=modified::$([ -z "`git status --porcelain`" ] && echo "false" || echo "true")
-      - name: Update cached commit
-        if: steps.git-check.outputs.modified == 'true'
-        run: |
-          git config --global user.name 'github-actions'
-          git config --global user.email 'github-actions@github.com'
-          git remote set-url origin https://x-access-token:${{ secrets.GITHUB_TOKEN }}@github.com/${{ github.repository }}
-          
-          git add current_commit.txt
-          
-          git commit -m "chore: update packwiz commit"
-          git tag -a "$(date '+%Y%m%d')" -m "scheduled release"
-          
-          git push --follow-tags
diff --git a/.github/workflows/docker-publish.yml b/.github/workflows/docker-publish.yml
deleted file mode 100644
index 1e19120..0000000
--- a/.github/workflows/docker-publish.yml
+++ /dev/null
@@ -1,63 +0,0 @@
-name: Publish Docker Image
-
-on:
-  push:
-    tags:
-      - '*'
-  pull_request:
-    branches:
-      - 'main'
-
-env:
-  IMAGE_NAME: ${{ github.repository }}
-
-
-jobs:
-  build:
-
-    runs-on: ubuntu-latest
-    permissions:
-      contents: read
-      packages: write
-      id-token: write
-
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v3
-
-      - name: Install cosign
-        if: github.event_name != 'pull_request'
-        uses: sigstore/cosign-installer@main
-
-      - name: Setup Docker buildx
-        uses: docker/setup-buildx-action@v2
-
-      - name: Log into docker hub
-        if: github.event_name != 'pull_request'
-        uses: docker/login-action@v2
-        with:
-          username: ${{ secrets.DOCKER_USERNAME }}
-          password: ${{ secrets.DOCKER_TOKEN }}
-
-      - name: Extract Docker metadata
-        id: meta
-        uses: docker/metadata-action@v4
-        with:
-          images: ${{ env.IMAGE_NAME }}
-
-      - name: Build and push Docker image
-        id: build-and-push
-        uses: docker/build-push-action@v3
-        with:
-          context: .
-          push: ${{ github.event_name != 'pull_request' }}
-          tags: ${{ steps.meta.outputs.tags }}
-          labels: ${{ steps.meta.outputs.labels }}
-          cache-from: type=gha
-          cache-to: type=gha,mode=max
-
-      - name: Sign the published Docker image
-        if: ${{ github.event_name != 'pull_request' }}
-        env:
-          COSIGN_EXPERIMENTAL: "true"
-        run: echo "${{ steps.meta.outputs.tags }}" | xargs -I {} cosign sign {}@${{ steps.build-and-push.outputs.digest }}
diff --git a/.github/workflows/docker.yaml b/.github/workflows/docker.yaml
new file mode 100644
index 0000000..b90999a
--- /dev/null
+++ b/.github/workflows/docker.yaml
@@ -0,0 +1,87 @@
+name: Publish Docker Image
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+
+jobs:
+  build:
+    name: Build image
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        arch: [x86_64, aarch64]
+
+    permissions:
+      contents: read
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Nix
+        uses: DeterminateSystems/nix-installer-action@v9
+
+      - name: Setup Nix cache
+        uses: DeterminateSystems/magic-nix-cache-action@v2
+
+      - name: Build Docker image
+        id: build
+        run: |
+          nix build -L .#container-${{ matrix.arch }}
+          [ ! -L result ] && exit 1
+          echo "path=$(realpath result)" >> "$GITHUB_OUTPUT"
+
+      - name: Upload image
+        uses: actions/upload-artifact@v4
+        with:
+          name: container-${{ matrix.arch }}
+          path: ${{ steps.build.outputs.path }}
+          if-no-files-found: error
+          retention-days: 12
+
+  push:
+    name: Push image
+    runs-on: ubuntu-latest
+    needs: build
+
+    permissions:
+      contents: read
+      packages: write
+
+    if: github.event_name == 'push'
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Download images
+        uses: actions/download-artifact@v4
+        with:
+          path: images
+
+      - name: Login to registry
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_TOKEN }}
+
+      - name: Push to registry
+        env:
+          TAG: docker.io/getchoo/packwiz-serve:latest
+        run: |
+          set -euo pipefail
+
+          architectures=("x86_64" "aarch64")
+          for arch in "${architectures[@]}"; do
+            docker load < images/container-"$arch"/*.tar.gz
+            docker tag packwiz-serve:latest-"$arch" ${{ env.TAG }}-"$arch"
+            docker push ${{ env.TAG }}-"$arch"
+          done
+
+          docker manifest create ${{ env.TAG }} \
+            --amend ${{ env.TAG }}-x86_64 \
+            --amend ${{ env.TAG }}-aarch64
+
+          docker manifest push ${{ env.TAG }}
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..b94215f
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,4 @@
+# nix build artifacts
+result*
+repl-result-out*
+
diff --git a/Dockerfile b/Dockerfile
deleted file mode 100644
index dfec610..0000000
--- a/Dockerfile
+++ /dev/null
@@ -1,21 +0,0 @@
-FROM docker.io/golang:alpine3.17 AS build
-
-RUN apk add --no-cache git=2.38.3-r1
-
-RUN git clone https://github.com/packwiz/packwiz.git /build
-
-WORKDIR /build
-RUN go mod download
-RUN go build
-
-FROM docker.io/alpine:3.17
-
-RUN mkdir /app
-COPY --from=build /build/packwiz /app/
-
-WORKDIR /data
-VOLUME /data
-
-EXPOSE 8080
-
-CMD [ "/app/packwiz", "serve" ]
diff --git a/container.nix b/container.nix
new file mode 100644
index 0000000..79d7c5c
--- /dev/null
+++ b/container.nix
@@ -0,0 +1,51 @@
+{
+  lib,
+  pkgs,
+  system,
+  ...
+}: arch: let
+  crossPkgs =
+    {
+      "x86_64-linux" = {
+        "x86_64" = pkgs.pkgsStatic;
+        "aarch64" = pkgs.pkgsCross.aarch64-multiplatform.pkgsStatic;
+      };
+
+      "aarch64-linux" = {
+        "x86_64" = pkgs.pkgsCross.musl64;
+        "aarch64" = pkgs.pkgsStatic;
+      };
+    }
+    .${system}
+    .${arch};
+
+  packwiz = crossPkgs.packwiz.overrideAttrs (oldAttrs: {
+    ldflags = [
+      "-linkmode external"
+      "-extldflags '-static -L${crossPkgs.musl}/lib'"
+      "-s -w -X github.com/packwiz/packwiz.version=${oldAttrs.version}"
+    ];
+
+    postInstall = "";
+
+    CGO_ENABLED = 0;
+  });
+in
+  pkgs.dockerTools.buildLayeredImage {
+    name = "packwiz-serve";
+    tag = "latest-${arch}";
+
+    contents = [packwiz];
+
+    config = {
+      Cmd = ["/bin/packwiz" "serve"];
+      Env = [
+        "HOME=/home" # why exactly does packwiz need a home dir? :shrug:
+      ];
+      WorkingDir = "/data";
+      Volumes = {"/data" = {};};
+      ExposedPorts = {"8080" = {};};
+    };
+
+    architecture = crossPkgs.go.GOARCH;
+  }
diff --git a/current_commit.txt b/current_commit.txt
deleted file mode 100644
index 4d03402..0000000
--- a/current_commit.txt
+++ /dev/null
@@ -1 +0,0 @@
-"7e3ca8d9d54ec56d0ceaaca293e502c39d824422"
diff --git a/flake.lock b/flake.lock
new file mode 100644
index 0000000..d30663e
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,26 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1704161960,
+        "narHash": "sha256-QGua89Pmq+FBAro8NriTuoO/wNaUtugt29/qqA8zeeM=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "63143ac2c9186be6d9da6035fa22620018c85932",
+        "type": "github"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "ref": "nixpkgs-unstable",
+        "type": "indirect"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 0000000..8008d76
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,34 @@
+{
+  description = "a docker image to serve packwiz modpacks";
+
+  inputs.nixpkgs.url = "nixpkgs/nixpkgs-unstable";
+
+  outputs = {
+    self,
+    nixpkgs,
+    ...
+  }: let
+    systems = [
+      "x86_64-linux"
+      "aarch64-linux"
+    ];
+
+    forAllSystems = fn: nixpkgs.lib.genAttrs systems (sys: fn nixpkgs.legacyPackages.${sys});
+  in {
+    formatter = forAllSystems (pkgs: pkgs.alejandra);
+
+    packages = forAllSystems ({
+      pkgs,
+      system,
+      ...
+    }: let
+      containerFor = import ./container.nix pkgs;
+      arch = pkgs.stdenv.hostPlatform.uname.processor;
+    in {
+      container-x86_64 = containerFor "x86_64";
+      container-aarch64 = containerFor "aarch64";
+
+      default = self.packages.${system}."container-${arch}";
+    });
+  };
+}