[gimp] build: skip Recommends for docker image

[Michael Schumacher <schumaml src gnome org>]

commit 743b303b19731d63557fab5653bf100695431456
Author: Michael Schumacher <schumaml gmx de>
Date:   Tue Sep 5 22:37:49 2017 +0200

    build: skip Recommends for docker image
    
    manpages, docs, utilities are not needed for a pure build image

 build/docker/gimpbuilder-base/Dockerfile |    7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)
---
diff --git a/build/docker/gimpbuilder-base/Dockerfile b/build/docker/gimpbuilder-base/Dockerfile
index 2ba1452..867a283 100644
--- a/build/docker/gimpbuilder-base/Dockerfile
+++ b/build/docker/gimpbuilder-base/Dockerfile
@@ -5,17 +5,18 @@ FROM debian:testing
 ENV PREFIX=/export/output
 ENV PATH=$PREFIX/bin:$PATH
 ENV PKG_CONFIG_PATH=$PREFIX/lib/pkgconfig:$PKG_CONFIG_PATH
+ENV APT_GET_OPTIONS="-o APT::Install-Recommends=0 -y"
 
 RUN apt-get update
 
 # Installing the build environment
-RUN apt-get install -y build-essential devscripts fakeroot quilt dh-make automake libdistro-info-perl less 
nano
+RUN apt-get install $APT_GET_OPTIONS build-essential devscripts fakeroot quilt dh-make automake 
libdistro-info-perl less nano
 
 # Installing additional dependencies for babl
 # none needed
 
 # Installing additional dependencies for GEGL
-RUN apt-get install -y intltool libglib2.0-dev libjson-c-dev libjson-glib-dev libgexiv2-dev libcairo2-dev 
libpango1.0-dev libjpeg62-turbo-dev libsuitesparse-dev libspiro-dev libopenexr-dev
+RUN apt-get install $APT_GET_OPTIONS intltool libglib2.0-dev libjson-c-dev libjson-glib-dev libgexiv2-dev 
libcairo2-dev libpango1.0-dev libjpeg62-turbo-dev libsuitesparse-dev libspiro-dev libopenexr-dev libwebp-dev
 
 # Installing additional dependencies for GIMP 
-RUN apt-get install -y xsltproc gtk-doc-tools libgtk2.0-dev libtiff5-dev libbz2-dev liblzma-dev librsvg2-dev 
liblcms2-dev python-cairo-dev python-gtk2-dev glib-networking libaa1-dev libgs-dev libpoppler-glib-dev 
libmng-dev libwmf-dev libxpm-dev libasound2-dev
\ No newline at end of file
+RUN apt-get install $APT_GET_OPTIONS xsltproc gtk-doc-tools libgtk2.0-dev libtiff5-dev libbz2-dev 
liblzma-dev librsvg2-dev liblcms2-dev python-cairo-dev python-gtk2-dev glib-networking libaa1-dev libgs-dev 
libpoppler-glib-dev libmng-dev libwmf-dev libxpm-dev libasound2-dev
\ No newline at end of file