add standalone build

docker/nextjs-standalone/Dockerfile

@@ -0,0 +1,49 @@
+
+# Base ───────────────────────────────────────────────────────────────────────
+FROM node:14-alpine as base
+
+WORKDIR /opt/app
+
+ENV PATH /opt/app/node_modules/.bin:$PATH
+
+# Build ──────────────────────────────────────────────────────────────────────
+FROM base as builder
+
+ARG NEXT_PUBLIC_API_HOST
+ARG NEXT_PUBLIC_REMOTE_CURRENT
+ARG NEXT_PUBLIC_PUBLIC_HOST
+ARG NEXT_PUBLIC_BOT_USERNAME
+
+ENV NEXT_PUBLIC_API_HOST $NEXT_PUBLIC_API_HOST
+ENV NEXT_PUBLIC_REMOTE_CURRENT $NEXT_PUBLIC_REMOTE_CURRENT
+ENV NEXT_PUBLIC_PUBLIC_HOST $NEXT_PUBLIC_PUBLIC_HOST
+ENV NEXT_PUBLIC_BOT_USERNAME $NEXT_PUBLIC_BOT_USERNAME
+
+# ENV NEXT_PUBLIC_API_HOST https://vault48.org/api/
+# ENV NEXT_PUBLIC_REMOTE_CURRENT https://vault48.org/static/
+# ENV NEXT_PUBLIC_PUBLIC_HOST https://vault48.org/
+# ENV NEXT_PUBLIC_BOT_USERNAME vault48bot
+
+COPY package.json .
+COPY yarn.lock .
+
+RUN true  \
+  && yarn install --frozen-lockfile\
+  && true
+
+COPY . /opt/app
+
+# pkg packs nodejs with given script, so we don't need it in next section
+RUN yarn next build
+
+FROM node:14-alpine as runner
+
+WORKDIR /opt/app
+
+COPY --from=builder /opt/app/public ./public
+COPY --from=builder /opt/app/.next/standalone .
+COPY --from=builder /opt/app/.next/static ./.next/static
+
+EXPOSE 3000
+
+ENTRYPOINT ["node", "server.js"]