Production image is missing Sharp binary / Phyton

[janus-reith]

The sharp binaries don't get included in the production build for 3.0.

docker-base/images/node-dev/12-10-0-v2/Dockerfile

Line 4 in 5127ac0

RUN apk --no-cache --update add bash curl less shadow su-exec tini vim python2 make

includes an install step for python2 while

docker-base/images/node-prod/12-10-0-v1/Dockerfile

Line 4 in 5127ac0

RUN apk --no-cache add bash curl less tini vim make

does not.

Python is required to build libvips.

[janus-reith]

Also, I had to add a npm rebuild step to my Reaction Dockerfile so the modules were actually build.