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hey @rahulmlokurte, thanks for the contribution! looks like a useful feature.

i have a couple of comments that we could address before merging. generally i think the approach with reading the entire log stream and then filtering after we've loaded everything into memory could be improved by passing the lines argument down to the actual docker invocations. to that end we'd have to modify get_container_logs and stream_container_logs of the docker client. but we can do that another time.

cc @dfangl

LGTM! thanks for the contribution @rahulmlokurte, and welcome to the list of contributors :-)