Setting up workflow

- Added COPYING (LICENSE)
- Added Dockerfile
  - Automated build on push to main
  - Push docker container to local registry

Dockerfile

@@ -0,0 +1,25 @@
+FROM node:lts-slim AS build
+WORKDIR /app
+
+COPY package.json package.json
+RUN npm install
+
+COPY public/ public
+COPY src/ src
+COPY astro.config.mjs astro.config.mjs
+COPY tailwind.config.mjs tailwind.config.mjs
+COPY tsconfig.json tsconfig.json
+COPY components.json components.json
+RUN npm run build
+
+FROM node:lts-slim as prod
+WORKDIR /app
+
+COPY --from=build /app/dist /app/dist
+COPY --from=build /app/package.json /app/package.json
+COPY --from=build /app/package-lock.json /app/package-lock.json
+RUN npm ci
+
+EXPOSE 4321
+
+CMD ["npm", "run", "preview"]