tacticalrmm/docker/app/dockerfile

FROM node:12-alpine AS builder
ARG APP_HOST
ARG API_HOST
EXPOSE 80
WORKDIR /home/node
RUN apk add gettext
COPY ./web/package.json .
RUN npm install
COPY ./docker/app/.env.keep /home/.env.tmp
RUN envsubst '\$API_HOST' < /home/.env.tmp > /home/node/.env && rm /home/.env.tmp
COPY ./docker/app/app.conf /home/node/app.conf.tmp
RUN envsubst '\$APP_HOST' < /home/node/app.conf.tmp > /home/node/app.conf
COPY ./web .
RUN npm run build

FROM nginx:alpine
WORKDIR /usr/share/nginx/html
COPY --from=builder /home/node/dist .
COPY --from=builder /home/node/app.conf /etc/nginx/conf.d/default.conf