util: Add docker to automate creation of documentation

Build with:
 docker build --force-rm -t "doc.flashrom.org" \
	      "$PWD/util/docker/flashrom.org/"

Generate HTML files:
 mkdir -p "$PWD/doc/_build/"
 docker run -it --rm \
            --user "$(id -u):$(id -g)" \
            -v "$PWD/:/data-in/:ro" \
            -v "$PWD/doc/_build/:/data-out/" \
            doc.flashrom.org

Live web server:
 docker run -it --rm \
            --net=host -v "$PWD/:/data-in/:ro" \
            doc.flashrom.org livehtml

Change-Id: I889fa5f98e2fd6ef896ba4bb30aa5d985ff82622
Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Tested-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/75344
Reviewed-by: Anastasia Klimchuk <aklm@chromium.org>
Tested-by: Anastasia Klimchuk <aklm@chromium.org>

util/docker/flashrom.org/Dockerfile

@@ -0,0 +1,29 @@
+FROM alpine:3.8
+
+COPY makeSphinx.sh /makeSphinx.sh
+
+ADD https://sourceforge.net/projects/ditaa/files/ditaa/0.9/ditaa0_9.zip/download /tmp/ditaa.zip
+
+RUN apk add --no-cache python3 make bash git openjdk8-jre ttf-dejavu fontconfig \
+ && pip3 install --upgrade --no-cache-dir pip \
+ && pip3 install --no-cache-dir  \
+    sphinx===1.8.3 \
+    sphinx_rtd_theme===0.4.2 \
+    recommonmark===0.5.0 \
+    sphinx_autobuild===0.7.1 \
+    sphinxcontrib-ditaa===0.6 \
+ && chmod 755 /makeSphinx.sh
+RUN cd /tmp \
+ && unzip ditaa.zip \
+ && mv ditaa0_9.jar /usr/lib
+ADD ditaa.sh /usr/bin/ditaa
+
+VOLUME /data-in /data-out
+
+# For Sphinx-autobuild
+# Port 8000 - HTTP server
+# Port 35729 - websockets connection to allow automatic browser reloads after each build
+EXPOSE 8000 35729
+
+ENTRYPOINT ["/bin/bash", "/makeSphinx.sh"]
+CMD []

util/docker/flashrom.org/README.md

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+# doc.coreboot.org
+ Docker container for generating and developing documentation for doc.coreboot.org
+
+**NOTE**: All paths are from the base of the coreboot git repo.
+
+### Build
+
+```sh
+  docker build --force-rm -t "doc.flashrom.org" "$PWD/util/docker/flashrom.org/"
+```
+
+### Generating production HTML
+
+```sh
+# To ensure the output directory is given the correct permissions, make sure to
+# created it before running docker the first time.
+mkdir -p "$PWD/doc/_build/"
+
+docker run -it --rm \
+           --user "$(id -u):$(id -g)" \
+           -v "$PWD/:/data-in/:ro" \
+           -v "$PWD/doc/_build/:/data-out/" \
+           doc.flashrom.org
+```
+
+### live reloaded with web server
+On the host machine, open a browser to the address http://0.0.0.0:8000
+```sh
+docker run -it --rm \
+           --net=host -v "$PWD/:/data-in/:ro" \
+           doc.flashrom.org livehtml
+```

util/docker/flashrom.org/ditaa.sh

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+#!/usr/bin/env sh
+exec java -jar /usr/lib/ditaa0_9.jar $*

util/docker/flashrom.org/makeSphinx.sh

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+#!/usr/bin/env bash
+
+if [ "$1" == "livehtml" ]; then
+  echo "Starting live documentation build"
+  cd /data-in/ && sphinx-autobuild -b html doc /tmp/build/html
+else
+  echo "Starting production documentation build"
+  cd /data-in/ \
+    && sphinx-build -b html doc /tmp/build/html \
+    && rm -rf /data-out/* \
+    && mv /tmp/build/html/* /data-out/
+fi