Dockerfile

FROM rocker/r2u:latest

WORKDIR /code

RUN apt-get update && apt-get install -y --no-install-recommends \
    ca-certificates \
    libcurl4-openssl-dev \
    libssl-dev \
    && rm -rf /var/lib/apt/lists/*

RUN install2.r --error --skipinstalled \
    shiny \
    jsonlite

COPY . .

EXPOSE 7860

CMD ["R", "--quiet", "-e", "shiny::runApp(host='0.0.0.0', port=7860)"]