$ docker run -d -w /root/sample \
-p 8000:8000 \
--name sample \
gentkd/extended-mkdocs \
mkdocs serve -a 0.0.0.0:8000

6de822124d991439c9dd6a08f6b25bded0cb7025ee206f03dcbfe30097742eb3

$ docker ps

CONTAINER ID        IMAGE                          COMMAND                 CREATED             STATUS              PORTS                    NAMES
6de822124d99        gentkd/extended-mkdocs:local   "mkdocs-sample-serve"   4 seconds ago       Up 3 seconds        0.0.0.0:8000->8000/tcp   sample

$ docker logs sample -f

INFO    -  Building documentation...
INFO    -  Cleaning site directory
[I 190613 11:16:16 server:296] Serving on http://0.0.0.0:8000
[I 190613 11:16:16 handlers:62] Start watching changes
[I 190613 11:16:16 handlers:64] Start detecting changes

$

$ mkdir -p myworkdir/docs
$ cd myworkdir
$ curl -O https://raw.githubusercontent.com/gki/docker-mkdocs/master/ext-mkdocs-sample/mkdocs.yml
$ docker pull gentkd/extended-mkdocs
$ docker run -d -w /root/workspace \
-v $(pwd):/root/workspace \
-p 8000:8000 \
--name ext-mkdocs \
gentkd/extended-mkdocs \
mkdocs serve -a 0.0.0.0:8000

$ echo "Hello MkDocs!" > docs/index.md

$ (move to local dir)

$ docker exec -w /root/workspace ext-mkdocs mkdocs build

INFO    -  Cleaning site directory
INFO    -  Building documentation to directory: /root/workspace/site

$ ls site

404.html       assets         index.html     search         sitemap.xml    sitemap.xml.gz

$ (move to local dir)

$ docker run -w /root/workspace \
-v $(pwd):/root/workspace \
gentkd/extended-mkdocs \
mkdocs build

INFO    -  Cleaning site directory
INFO    -  Building documentation to directory: /root/workspace/site

$ ls site

404.html       assets         index.html     search         sitemap.xml    sitemap.xml.gz