Docker-Docs/Dockerfile

95 lines
3.4 KiB
Docker

# This Dockerfile builds the docs for https://docs.docker.com/
# from the master branch of https://github.com/docker/docker.github.io
#
# Here is the sequence:
# 1. Set up base stages for building and deploying
# 2. Collect and build the reference documentation (from upstream resources)
# 3. Build static HTML from the current branch
# 4. Build the final image, combining the reference docs and current version
# of the documentation
#
# When the image is run, it starts Nginx and serves the docs at port 4000
# Jekyll environment (development/production)
ARG JEKYLL_ENV=development
# Engine
ARG ENGINE_BRANCH="19.03"
# Distribution
ARG DISTRIBUTION_BRANCH="release/2.7"
###
# Set up base stages for building and deploying
###
FROM starefossen/github-pages:198 AS builderbase
ENV TARGET=/usr/share/nginx/html
WORKDIR /usr/src/app/md_source/
# Set vars used by fetch-upstream-resources.sh script as an environment variable,
# so that they are persisted in the image for use in later stages.
ARG ENGINE_BRANCH
ENV ENGINE_BRANCH=${ENGINE_BRANCH}
ARG DISTRIBUTION_BRANCH
ENV DISTRIBUTION_BRANCH=${DISTRIBUTION_BRANCH}
# Fetch upstream resources (reference documentation)
# Only add the files that are needed to build these reference docs, so that these
# docs are only rebuilt if changes were made to ENGINE_BRANCH or DISTRIBUTION_BRANCH.
# Disable caching (docker build --no-cache) to force updating these docs.
FROM alpine AS upstream-resources
RUN apk add --no-cache subversion wget
WORKDIR /usr/src/app/md_source/
COPY ./_scripts/fetch-upstream-resources.sh ./_scripts/
ARG ENGINE_BRANCH
ARG DISTRIBUTION_BRANCH
RUN ./_scripts/fetch-upstream-resources.sh .
# Build the static HTML for the current docs.
# After building with jekyll, fix up some links
FROM builderbase AS current
COPY . .
COPY --from=upstream-resources /usr/src/app/md_source/. ./
# substitute the "{site.latest_engine_api_version}" in the title for the latest
# API docs, based on the latest_engine_api_version parameter in _config.yml
RUN ./_scripts/update-api-toc.sh
ARG JEKYLL_ENV
RUN echo "Building docs for ${JEKYLL_ENV} environment"
RUN set -eu; \
if [ "${JEKYLL_ENV}" = "production" ]; then \
jekyll build --profile -d ${TARGET} --config _config.yml,_config_production.yml; \
sed -i 's#<loc>/#<loc>https://docs.docker.com/#' "${TARGET}/sitemap.xml"; \
else \
jekyll build --profile -d ${TARGET}; \
echo '[]' > ${TARGET}/js/metadata.json; \
fi; \
find ${TARGET} -type f -name '*.html' | while read i; do sed -i 's#\(<a[^>]* href="\)https://docs.docker.com/#\1/#g' "$i"; done;
# This stage only contains the generated files. It can be used to host the
# documentation on a non-containerised service (e.g. to deploy to an s3 bucket).
# When using BuildKit, use the '--output' option to build the files and to copy
# them to your local filesystem.
#
# DOCKER_BUILDKIT=1 docker build --target=deploy-source --output=./_site .
FROM scratch AS deploy-source
COPY --from=current /usr/share/nginx/html /
# Final stage, which includes nginx, and the current docs.
#
# To build current docs:
# DOCKER_BUILDKIT=1 docker build -t docs .
FROM nginx:alpine AS deploy
ENV TARGET=/usr/share/nginx/html
WORKDIR $TARGET
COPY --from=current /usr/share/nginx/html .
# Configure NGINX
COPY _deploy/nginx/default.conf /etc/nginx/conf.d/default.conf
ARG JEKYLL_ENV
ENV JEKYLL_ENV=${JEKYLL_ENV}
CMD echo -e "Docker docs are viewable at:\nhttp://0.0.0.0:4000 (build target: ${JEKYLL_ENV})"; exec nginx -g 'daemon off;'