2.0.1

image size optimized from 95MB to 55MB using updated alpine base 3.8

node
v9.2.0 -> v10.7.0

npm
5.5.1 -> 6.1.0

yarn
1.3.2 -> 1.7.0

firebase
3.15.2 -> 4.0.1

Alpine Linux
3.6.2 -> 3.8.0