Reduce the size of the OCR Docker image

[jonchang]

Now that we're adding this though, do you know if we're able to eliminate other installed dependencies to make these images smaller or will they still be needed?

Originally posted by @derekadombek in #375 (comment)

We should explore the OCR docker image and look at ways to reduce their size, either through cleanup or not installing certain dependencies

[bora-skylight]

@derekadombek @jonchang I am categorizing this ticket as Nice To Have so I am moving to the Ice Box and out of the Backlog to clearly indicate priority for the remainder of the project.

[jonchang]

When #472 is merged this will reduce the image size from 3gb 10gb to 1.5gb.

Other prs: #459 #414