Generate downloadable tgz on server for each model

[alx]

When a new model is created after a training job, it should also generate a tgz archive that user could access/download.

Here is a solution using a new Docker container to periodically scan model folders, and create a tgz archive in these folders if it's missing.

• BusyBox cron container example: https://gist.github.com/andyshinn/3ae01fa13cb64c9d36e7

• Dockerfile:

FROM alpine:3.7
COPY createDownloadableService /etc/periodic/hourly/createDownloadableService
RUN chmod +x /etc/periodic/hourly/createDownloadableService
CMD crond -l 2 -f

• createDownloadableService script:

#!/bin/sh
SERVICE_PATH=/opt/platform/models/public

for f in $SERVICE_PATH/*; do
    if [[ -d "$f" ]]; then
    # $f is a directory
        
        MODEL_NAME="$(basename $f)"
        MODEL_ARCHIVE="$f/$MODEL_NAME.tar.gz"

        if [[ ! -f "$MODEL_ARCHIVE" ]]; then
           # if $f/$MODEL_NAME.tar.gz doesn't exist
           # create it with content from $f
           tar -zcf $MODEL_ARCHIVE -C $f .
        fi
    fi
done