chore: move docs to fly

docs/Dockerfile

@@ -0,0 +1,18 @@
+FROM alpine:latest AS builder
+
+RUN apk add nodejs-current yarn
+
+WORKDIR /build
+COPY . .
+RUN yarn
+ENV NODE_OPTIONS=--openssl-legacy-provider
+RUN yarn build
+
+FROM alpine:latest
+
+RUN apk add caddy
+
+WORKDIR /app
+COPY --from=builder /build/content/.vuepress/dist /app
+
+ENTRYPOINT [ "/usr/sbin/caddy", "file-server", "-l", "0.0.0.0:8000", "-r", "/app" ]

docs/fly.toml

@@ -0,0 +1,3 @@
+app = "pluralkit-docs"
+primary_region = "arn"
+http_service.internal_port = 8000