Simple docker image for running j2 templating jobs
Define a jinja2 template as usual with template variables corresponsing to environment variables. For example, if there is an environment variable called ME=nihil0, j2cli would process the template Hello { ME } and write Hello nihil0 to stdout.
To process a local file, say myfile.jinja, mount the file into the /build directory of the container, pass any variables you want to substitute with -e arguments to docker run.
echo "Hello {{ ME }}" > sayhello.jinja
docker run -it -v /path/to/sayhello.jinja:/build/template.jinja -e ME=nihil0 nihil0/j2cli
# Hello nihil0