# Base image to use for building documentation archives.
# This image uses "ONBUILD" to perform all required steps in the archives
# and relies upon its parent image having a layer called `builder`.

FROM nginx:alpine

# Make the version accessible to this build-stage, and copy it to an ENV so
# that it persists in the final image.
ONBUILD ARG VER
ONBUILD ENV VER=$VER

# Clean out any existing HTML files, and copy the HTML from the builder stage
# to the default location for Nginx.
ONBUILD RUN rm -rf /usr/share/nginx/html/*
ONBUILD COPY --from=builder /site /usr/share/nginx/html

# Copy the Nginx config
COPY dockerfiles/nginx-overrides.conf /etc/nginx/conf.d/default.conf

# Start Nginx to serve the archive at / (which will redirect to the version-specific dir)
CMD echo -e "GitLab docs are viewable at:\nhttp://0.0.0.0:4000"; exec nginx -g 'daemon off;'