Initial migration to eleventy

- Add dockerfile to run eleventy from
- Add justfile to save useful commands

docker/Dockerfile

@@ -0,0 +1,10 @@
+FROM node:latest
+
+WORKDIR /opt/app
+
+RUN npm init -y
+RUN npm install @11ty/eleventy
+
+COPY ./src .
+
+CMD [ "npx", "@11ty/eleventy" ]

justfile

@@ -0,0 +1,13 @@
+set shell := ["bash", "-c"]
+
+# List just commands by default
+default:
+    @just --list
+
+# Build image
+build:
+    docker buildx build -f ./docker/Dockerfile --tag 11ty:latest .
+
+# Run development server
+dev: build
+    docker run -p 1280:8080 11ty:latest npx @11ty/eleventy --serve