- Docker files and build scripts
+ add git, bash and patch to the docker base definition (Dockerfile.base)
+ build leveldb once and for all
(scripts/create_docker_image.leveldb_deps.sh)
+ add --depth 1 to all git clone calls
+ remove sudo, openssh and rsync from base images
+ add --no-cache to all apk calls
+ merge dockerfiles in the sh scripts
