diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
new file mode 100644
index 00000000..d80d090b
--- /dev/null
+++ b/.github/workflows/build.yml
@@ -0,0 +1,88 @@
+name: Build Pelican Site
+on:
+  workflow_call:
+    inputs:
+      settings:
+        required: true
+        description: "The path to your Pelican settings file (`pelican`'s `--settings` option), for example: 'publishconf.py'"
+        type: string
+      requirements:
+        required: false
+        default: "pelican"
+        description: "The Python requirements to install, for example to enable markdown and typogrify use: 'pelican[markdown] typogrify' or if you have a requirements file use: '-r requirements.txt'"
+        type: string
+      output-path:
+        required: false
+        default: "output/"
+        description: "Where to output the generated files (`pelican`'s `--output` option)"
+        type: string
+      theme:
+        required: false
+        default: ""
+        description: "The GitHub repo URL of a custom theme to use, for example: 'https://github.com/seanh/sidecar.git'"
+        type: string
+      python:
+        required: false
+        default: "3.12"
+        description: "The version of Python to use, for example: '3.12' (to use the most recent version of Python 3.12, this is faster) or '3.12.1' (to use an exact version, slower)"
+        type: string
+      siteurl:
+        required: false
+        default: ""
+        description: "The base URL of your web site (Pelican's SITEURL setting). If not passed this will default to the URL of your GitHub Pages site, which is correct in most cases."
+        type: string
+      feed_domain:
+        required: false
+        default: ""
+        description: "The domain to be prepended to feed URLs (Pelican's FEED_DOMAIN setting). If not passed this will default to the URL of your GitHub Pages site, which is correct in most cases."
+        type: string
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+concurrency:
+  group: "build"
+  cancel-in-progress: false
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: ${{ inputs.python }}
+      - name: Checkout theme
+        if: ${{ inputs.theme }}
+        run: git clone '${{ inputs.theme }}' .theme
+      - name: Configure GitHub Pages
+        id: pages
+        uses: actions/configure-pages@v5
+      - name: Install requirements
+        run: pip install ${{ inputs.requirements }}
+      - name: Build Pelican site
+        shell: python
+        run: |
+          import subprocess
+
+          cmd = "pelican"
+          cmd += " --settings ${{ inputs.settings }}"
+          cmd += " --extra-settings"
+          cmd += """ SITEURL='"${{ inputs.siteurl || steps.pages.outputs.base_url }}"'"""
+          cmd += """ FEED_DOMAIN='"${{ inputs.feed_domain || steps.pages.outputs.base_url }}"'"""
+          cmd += " --output ${{ inputs.output-path }}"
+
+          if "${{ inputs.theme }}":
+              cmd += " --theme-path .theme"
+
+          subprocess.run(cmd, shell=True, check=True)
+      - name: Fix permissions
+        run: |
+          chmod -c -R +rX "${{ inputs.output-path }}" | while read line; do
+            echo "::warning title=Invalid file permissions automatically fixed::$line"
+          done
+      - name: Upload artifact
+        uses: actions/upload-pages-artifact@v3
+        with:
+          path: ${{ inputs.output-path }}