Create dockerfile for all-contributors

.all-contributorsrc

@@ -4,8 +4,8 @@
   "repoType": "github",
   "repoHost": "https://github.com",
   "files": [
-    "README.md",
-    "CONTRIBUTORS.md"
+    "/workspace/README.md",
+    "/workspace/CONTRIBUTORS.md"
   ],
   "imageSize": 50,
   "commit": false,

docs/allcontributors.dockerfile

@@ -0,0 +1,13 @@
+# Build with:
+# docker build -t allcontributors -f docs/allcontributors.dockerfile .
+# Run with:
+# docker run --rm -v $(pwd):/workspace allcontributors generate
+FROM node:bullseye-slim
+
+RUN yarn add --dev all-contributors-cli
+
+ENV HOME=/workspace
+WORKDIR /workspace
+
+ENTRYPOINT ["yarn", "all-contributors"]
+CMD ["generate", "--config=/workspace/.all-contributorsrc"]