How to install php7 pdo_pgsql via Dockerfile?

Question

PHP

Dockerfile

FROM php:7-fpm

ENV PATH $PATH:/root/.composer/vendor/bin

# Install modules
RUN apt-get update && apt-get install -y \
        openssl \
        curl \
        wget \
        git \
        unzip \
        libfreetype6-dev \
        libjpeg62-turbo-dev \
        libmcrypt-dev \
        libpng12-dev \
        libicu-dev \
                --no-install-recommends

RUN docker-php-ext-install mcrypt
RUN docker-php-ext-install intl 
RUN docker-php-ext-install mbstring 
RUN docker-php-ext-install exif 
RUN docker-php-ext-install pdo 
RUN docker-php-ext-install pdo_pgsql
....

When building It comes to installing pdo_pgsql and crashes

....
checking for PostgreSQL support for PDO... yes, shared
checking for pg_config... not found
configure: error: Cannot find libpq-fe.h. Please specify correct PostgreSQL installation path
ERROR: Service 'php' failed to build: The command '/bin/sh -c docker-php-ext-install pdo_pgsql' returned a non-zero code: 1

By searching for libpq-fe.h I found several links
https://github.com/docker-library/php/issues/221 but there for some other Linux
www.tech-notes.net/postgresql-9-4-on -centos-6-5 - but linking makes sense when postgres is installed... but it should be in another container... how right? or install and remove after build extension?

Answer 1

For Debian or Ubuntu, try installing libpq-dev.