Remove unnecessary packages from Synology Dockerfile

synology/Dockerfile.spksrc

@@ -5,64 +5,9 @@ ENV LANG C.UTF-8
 # Manage i386 arch
 RUN dpkg --add-architecture i386
 
-# Install required packages (in sync with README.rst instructions)
-RUN apt-get update && apt-get install --no-install-recommends -y \
-		autoconf-archive \
-		autogen \
-		automake \
-		bc \
-		bison \
-		build-essential \
-		check \
-		cmake \
-		curl \
-		cython \
-		debootstrap \
-		ed \
-		expect \
-		fakeroot \
-		flex \
-		g++-multilib \
-		gawk \
-		gettext \
-		git \
-		gperf \
-		imagemagick \
-		intltool \
-		jq \
-		libbz2-dev \
-		libc6-i386 \
-		libcppunit-dev \
-		libffi-dev \
-		libgc-dev \
-		libgmp3-dev \
-		libltdl-dev \
-		libmount-dev \
-		libncurses-dev \
-		libpcre3-dev \
-		libssl-dev \
-		libtool \
-		libunistring-dev \
-		lzip \
-		moreutils \
-		pkg-config \
-		python3 \
-		python3-distutils \
-		rename \
-		rsync \
-		scons \
-		subversion \
-		sudo \
-		swig \
-		texinfo \
-		unzip \
-		xmlto \
-		zlib1g-dev && \
-	apt-get clean && \
-	rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* && \
-	adduser --disabled-password --gecos '' user && \
-	adduser user sudo && \
-	echo "%users ALL=(ALL:ALL) NOPASSWD: ALL" | sudo tee /etc/sudoers.d/users
+RUN apt-get update && apt-get install --no-install-recommends -y make imagemagick curl jq wget procps intltool
+
+RUN apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
 
 # Volume pointing to spksrc sources
 VOLUME /spksrc