Add OS and PHP dependencies

apache/Dockerfile

@@ -1,10 +1,36 @@
 FROM php:7.2-apache
 
+# Install OS dependencies
+RUN apt-get update && \
+    DEBIAN_FRONTEND=noninteractive \
+    apt-get install --no-install-recommends -y \
+    libldap2-dev \
+    libmagickwand-dev \
+    imagemagick-common \
+    libmagickcore-dev \
+    imagemagick \
+    libc-client-dev \
+    libkrb5-dev \
+    libpq-dev \
+    && apt-get autoclean; apt-get autoremove && \
+    rm -rf /var/lib/apt/lists/*
+
+# Link LDAP library for PHP ldap extension
+RUN ln -fs /usr/lib/x86_64-linux-gnu/libldap.so /usr/lib/
+
+RUN docker-php-ext-configure imap --with-kerberos --with-imap-ssl
+
 # Install PHP Plugins
-RUN docker-php-ext-install ldap \
-    && docker-php-ext-install imap \
-    && docker-php-ext-install mbstring \
-    && docker-php-ext-install zip \
+RUN docker-php-ext-install -j5 \
+    ldap \
+    imap \
+    mbstring \
+    zip \
+    gd \
+    pdo \
+    pdo_mysql \
+    pgsql \
+    pdo_pgsql
 
 # Download, unzip and chmod of LimeSurvey
 RUN curl -L https://github.com/LimeSurvey/LimeSurvey/archive/3.0.2+180110.tar.gz -o lime.tar.gz && \