A container image with Graphviz installed.
To build:
docker build --force-rm -t mylib/graphviz .
You'll probably want to start the container with a mounted volume:
docker run -i -t -v "path/to/dot/files:/myvolume" mylib/graphviz bash
And then run dot from within the container:
cd /myvolume
dot -Gdpi=300 -Tpng -o foo.png foo.gv
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