Dockerfile

FROM rocker/shiny-verse:latest

# Set up a new user named "user" with user ID 1000
RUN useradd -m -u 1000 user

# Switch to the "user" user
USER user

# Set home to the user's home directory
ENV HOME=/home/user \
	PATH=/home/user/.local/bin:$PATH \
	R_LIBS_USER=$HOME/R/library

# Create a personal R library directory
RUN mkdir -p $R_LIBS_USER

# Set the working directory to the user's home directory
WORKDIR $HOME/app

# Copy the current directory contents into the container at $HOME/app setting the owner to the user
COPY --chown=user . $HOME/app

# Install stable packages from CRAN
RUN install2.r --error \
    bslib \
    httpuv \
    purrr \
    glue \
    httr2

RUN --mount=type=secret,id=SECRET_EXAMPLE,mode=0444,required=true

EXPOSE 7860

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