Docker install extensions?

Question

Docker

I can’t understand when docker-php-ext-install is enough and when else docker-php-ext-enable should be pulled?
for example

RUN apt-get install -y libpq-dev \
    && docker-php-ext-install pdo pdo_mysql pdo_pgsql

или еще надо 

&& docker-php-ext-enable pdo pdo_mysql pdo_pgsql   ?

если не надо то почему ?

Answer 1

enable is inside install