ci: initial CI setup for deployment

Dockerfile

@@ -0,0 +1,13 @@
+FROM node:15.1.0 as builder
+WORKDIR /project
+COPY package.json /project/package.json
+RUN npm ci
+
+# use separate layer for more efficient caching
+COPY snowpack.config.js /project/snowpack.config.js
+COPY src /project/src
+
+RUN npm run build
+
+FROM pierrezemb/gostatic:latest
+COPY --from=builder /project/build /srv/http