Dockerfile problem

FROM richarvey/nginx-php-fpm

EXPOSE 80

WORKDIR /usr/share/nginx/html/

# Copy the project source code from the host machine
# to a temporary folder in the Docker
COPY ./code /usr/share/nginx/tmp_code/

# Clean up the server's HTML folder first
RUN rm -frv /usr/share/nginx/html/*
# Check if it was cleaned up
RUN ls /usr/share/nginx/html/
# Copy source code to the HTML folder
RUN cp -r -v /usr/share/nginx/tmp_code/* /usr/share/nginx/html/
# Check if source code was copied
RUN ls /usr/share/nginx/html/

# Remove the temporary source code,
# since we now copied it to the HTML folder
RUN rm -frv /usr/share/nginx/tmp_code