Added pkg-config to the PHP extentions and Tools that are installed from APT

workspace/Dockerfile

@@ -47,7 +47,8 @@ RUN apt-get update && apt-get install -y --force-yes \
         git \
         curl \
         vim \
-        nano
+        nano \
+	pkg-config
 
 # Clean up, to free some space
 RUN apt-get clean
@@ -93,4 +94,4 @@ WORKDIR /var/www/laravel
 ARG INSTALL_PRESTISSIMO=false
 RUN if [ "$INSTALL_PRESTISSIMO" = true ] ; then \
         composer global require "hirak/prestissimo:^0.3"; \
-    fi
+    fi