How To Write Yaml Script . Yaml was specifically created to work well for common use cases such as configuration files, log files and cross language sharing files and data sharing. In the write_yaml method, we open a file called toyaml.yml in write mode and use the yaml packages’ dump method to write the yaml document to the file. devops How to pull and run docker image from docker hub in a yaml from stackoverflow.com Try to put your script into a configmap key/value, mount this configmap as a volume and run the script from the volume. Below you can see the same process shown in json and yaml. At the time of writing this, the latest version of ruamel (0.17.16) had a bug such that many of the outputs omitted many of the comments.