chore : use `--no-install-recommends` flag to `apt-get` in dockerfile to save space
chore : use `--no-install-recommends` flag to `apt-get` in dockerfile to save space

By default, Ubuntu or Debian based "apt" or "apt-get" system installs recommended but not suggested packages .

By passing "--no-install-recommends" option, the user lets apt-get know not to consider recommended packages as a dependency to install.

This results in smaller downloads and installation of packages .

Refer to blog at [Ubuntu Blog](https://ubuntu.com/blog/we-reduced-our-docker-images-by-60-with-no-install-recommends) .

Signed-off-by: Pratik Raj <83dfe4463b802f0d5db3c55ac18475aaf3b97eff@gmail.com>

liseri/generator-jhipster,mraible/generator-jhipster,pascalgrimaud/generator-jhipster,jhipster/generator-jhipster,ruddell/generator-jhipster,gmarziou/generator-jhipster,PierreBesson/generator-jhipster,mraible/generator-jhipster,pascalgrimaud/generator-jhipster,vivekmore/generator-jhipster,ruddell/generator-jhipster,vivekmore/generator-jhipster,dynamicguy/generator-jhipster,PierreBesson/generator-jhipster,gmarziou/generator-jhipster,pascalgrimaud/generator-jhipster,vivekmore/generator-jhipster,dynamicguy/generator-jhipster,mraible/generator-jhipster,ctamisier/generator-jhipster,PierreBesson/generator-jhipster,ctamisier/generator-jhipster,PierreBesson/generator-jhipster,liseri/generator-jhipster,pascalgrimaud/generator-jhipster,atomfrede/generator-jhipster,jhipster/generator-jhipster,liseri/generator-jhipster,atomfrede/generator-jhipster,vivekmore/generator-jhipster,gmarziou/generator-jhipster,gmarziou/generator-jhipster,ruddell/generator-jhipster,ctamisier/generator-jhipster,atomfrede/generator-jhipster,liseri/generator-jhipster,jhipster/generator-jhipster,mraible/generator-jhipster,ctamisier/generator-jhipster,pascalgrimaud/generator-jhipster,jhipster/generator-jhipster,vivekmore/generator-jhipster,atomfrede/generator-jhipster,jhipster/generator-jhipster,ruddell/generator-jhipster,liseri/generator-jhipster,mraible/generator-jhipster,atomfrede/generator-jhipster,dynamicguy/generator-jhipster,PierreBesson/generator-jhipster,dynamicguy/generator-jhipster,ruddell/generator-jhipster,gmarziou/generator-jhipster,ctamisier/generator-jhipster