Add til about a docker container via cron on the host

docker/run-docker-container-via-cronjob-on-host.md

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+# Run a docker container using cronjob on the host
+Sometimes you want to run a docker container on the host at specific times.
+E.g. star the container, do whatever it has to do and remove it.
+This can be accomplished using cron.
+
+The following can be added to crontab
+
+```
+00 10 * * * docker run --rm -v ~/nodescripts:/tmp -w /tmp node /bin/bash -c "node index.js"
+```
+
+This will run a docker container with the folder nodescripts mounted to /tmp and calls bash to run `node index.js`
+
+An important note is to not have the `-it` flag otherwise you get "the input device is not a TTY" errors.