Dockerfile

# stage 1
FROM madnight/docker-alpine-wkhtmltopdf:alpine-3.8 as base

# stage 2
FROM ruby:2.6.1-alpine3.8

# copy over wkhtmltopdf apline binary
COPY --from=base /bin/wkhtmltopdf /usr/bin/wkhtmltopdf

COPY .aptible.yml Procfile /.aptible/
COPY Gemfile Gemfile.lock /app/

RUN apk add --no-cache --virtual .builddeps \
    build-base \
  && apk add --no-cache \
    git \
    glib \
    libgcc \
    libstdc++ \
    libx11 \
    libxrender \
    libxext \
    libintl \
    libcrypto1.0 \
    libssl1.0 \
    ttf-dejavu \
    ttf-droid \
    ttf-freefont \
    ttf-liberation \
    ttf-ubuntu-font-family \
    postgresql-dev \
    tzdata \
  && cd /app \
  && gem update --system 3.0.3 \
  && bundle install \
  && apk del --no-network .builddeps

WORKDIR /app

COPY . .

EXPOSE 3000

CMD ["bundle", "exec", "rails", "s", "-b", "0.0.0.0", "-p", "3000"]