apt-get: always use --no-install-recommends and apt-get clean

this helps us to avoid installing unneeded packages and removes the
package cache from the images to keep them less bloated.

debian-jessie-build/Dockerfile

@@ -2,44 +2,47 @@ FROM debian:jessie
 
 MAINTAINER Harald Welte <laforge@gnumonks.org>
 
-RUN	apt-get update && apt-get install -y \
-	autoconf \
-	autoconf-archive \
-	autogen \
-	automake \
-	bison \
-	build-essential \
-	cppcheck \
-	debhelper \
-	devscripts \
-	dh-autoreconf \
-	dh-systemd \
-	doxygen \
-	flex \
-	g++ \
-	gawk \
-	gcc \
-	git \
-	git-buildpackage \
-	libc-ares-dev \
-	libdbd-sqlite3 \
-	libdbi-dev \
-	libfftw3-dev \
-	libgps-dev \
-	libgsm1-dev \
-	libortp-dev \
-	libpcap-dev \
-	libpcsclite-dev \
-	libtalloc-dev \
-	libtool \
-	libreadline-dev \
-	libsctp-dev \
-	libsofia-sip-ua-glib-dev \
-	libsqlite3-dev \
-	libssl-dev \
-	libusb-dev \
-	libusb-1.0-0-dev \
-	make \
-	pkg-config \
-	sqlite3 \
-	wget
+RUN	apt-get update && \
+	apt-get upgrade -y && \
+	apt-get install -y --no-install-recommends \
+		autoconf \
+		autoconf-archive \
+		autogen \
+		automake \
+		bison \
+		build-essential \
+		cppcheck \
+		debhelper \
+		devscripts \
+		dh-autoreconf \
+		dh-systemd \
+		doxygen \
+		flex \
+		g++ \
+		gawk \
+		gcc \
+		git \
+		git-buildpackage \
+		libc-ares-dev \
+		libdbd-sqlite3 \
+		libdbi-dev \
+		libfftw3-dev \
+		libgps-dev \
+		libgsm1-dev \
+		libortp-dev \
+		libpcap-dev \
+		libpcsclite-dev \
+		libtalloc-dev \
+		libtool \
+		libreadline-dev \
+		libsctp-dev \
+		libsofia-sip-ua-glib-dev \
+		libsqlite3-dev \
+		libssl-dev \
+		libusb-dev \
+		libusb-1.0-0-dev \
+		make \
+		pkg-config \
+		sqlite3 \
+		wget && \
+	apt-get clean

debian-jessie-buildslave/Dockerfile

@@ -3,7 +3,6 @@ FROM	laforge/debian-jessie-build
 MAINTAINER Harald Welte <laforge@gnumonks.org>
 
 RUN	dpkg --add-architecture i386 && \
-	apt-get upgrade -y && \
 	apt-get install -y --no-install-recommends \
 		asciidoc \
 		bc \
@@ -28,6 +27,7 @@ RUN	useradd --uid=1000 build && \
 
 RUN	pip install timeout_decorator
 
+# first add this file to invalidate cache each time osmo-python-tests.git is updated
 ADD	http://git.osmocom.org/python/osmo-python-tests/patch /tmp/commit-osmo-python-tests
 RUN	git clone git://git.osmocom.org/python/osmo-python-tests && \
 	cd osmo-python-tests && \

debian-jessie-osmocom/Dockerfile

@@ -8,17 +8,20 @@ RUN	apt-key add /tmp/Release.key && \
 	rm /tmp/Release.key && \
 	echo "deb http://download.opensuse.org/repositories/network:/osmocom:/nightly/Debian_8.0/ ./" > /etc/apt/sources.list.d/osmocom-nightly.list
 
-RUN	apt-get update && apt-get install -y \
-	telnet \
-	osmocom-sgsn \
-	osmocom-nitb \
-	osmocom-ipaccess-utils \
-	osmocom-gbproxy \
-	osmocom-bsc \
-	osmocom-bsc-nat \
-	osmocom-bs11-utils \
-	openggsn \
-	osmo-bts-trx \
-	osmo-trx \
-	osmo-pcu \
-	osmo-sip-connector
+RUN	apt-get update && \
+	apt-get upgrade -y && \
+	apt-get install -y --no-install-recommends \
+		telnet \
+		osmocom-sgsn \
+		osmocom-nitb \
+		osmocom-ipaccess-utils \
+		osmocom-gbproxy \
+		osmocom-bsc \
+		osmocom-bsc-nat \
+		osmocom-bs11-utils \
+		openggsn \
+		osmo-bts-trx \
+		osmo-trx \
+		osmo-pcu \
+		osmo-sip-connector && \
+	apt-get clean

debian-stretch-titan/Dockerfile

@@ -5,7 +5,12 @@ MAINTAINER Harald Welte <laforge@gnumonks.org>
 RUN	apt-get update && apt-get install -y \
 	eclipse-titan
 
-RUN	apt-get update && apt-get -y install build-essential git
+RUN	apt-get update && \
+	apt-get upgrade -y && \
+	apt-get -y install \
+		build-essential \
+		git && \
+	apt-get clean
 
 ARG	eclipsegit=https://github.com/eclipse
 ARG	eclipsegit2=git://git.eclipse.org/gitroot/titan

osmo-bts-master/Dockerfile

@@ -8,14 +8,16 @@ RUN	apt-key add /tmp/Release.key && \
 	rm /tmp/Release.key && \
 	echo "deb http://download.opensuse.org/repositories/network:/osmocom:/nightly/Debian_8.0/ ./" > /etc/apt/sources.list.d/osmocom-nightly.list
 
-RUN	apt-get update && apt-get install -y \
-	telnet \
-	libosmocore-dev \
-	libosmo-abis-dev \
-	libosmo-netif-dev \
-	libosmo-sccp-dev \
-	libsmpp34-dev \
-	libgtp-dev
+RUN	apt-get update && \
+	apt-get install -y --no-install-recommends \
+		telnet \
+		libosmocore-dev \
+		libosmo-abis-dev \
+		libosmo-netif-dev \
+		libosmo-sccp-dev \
+		libsmpp34-dev \
+		libgtp-dev &&
+	apt-get clean
 
 WORKDIR	/tmp
 

osmo-ggsn-master/Dockerfile

@@ -8,9 +8,11 @@ RUN	apt-key add /tmp/Release.key && \
 	rm /tmp/Release.key && \
 	echo "deb http://download.opensuse.org/repositories/network:/osmocom:/nightly/Debian_8.0/ ./" > /etc/apt/sources.list.d/osmocom-nightly.list
 
-RUN	apt-get update && apt-get install -y \
-	telnet \
-	libosmocore-dev
+RUN	apt-get update && \
+	apt-get install -y --no-install-recommends \
+		telnet \
+		libosmocore-dev &&
+	apt-get clean
 
 WORKDIR	/tmp
 

osmo-nitb-master/Dockerfile

@@ -8,14 +8,16 @@ RUN	apt-key add /tmp/Release.key && \
 	rm /tmp/Release.key && \
 	echo "deb http://download.opensuse.org/repositories/network:/osmocom:/nightly/Debian_8.0/ ./" > /etc/apt/sources.list.d/osmocom-nightly.list
 
-RUN	apt-get update && apt-get install -y \
-	telnet \
-	libosmocore-dev \
-	libosmo-abis-dev \
-	libosmo-netif-dev \
-	libosmo-sccp-dev \
-	libsmpp34-dev \
-	libgtp-dev
+RUN	apt-get update && \
+	apt-get install -y --no-install-recommends \
+		telnet \
+		libosmocore-dev \
+		libosmo-abis-dev \
+		libosmo-netif-dev \
+		libosmo-sccp-dev \
+		libsmpp34-dev \
+		libgtp-dev &&
+	apt-get clean
 
 WORKDIR	/tmp
 

osmo-sgsn-master/Dockerfile

@@ -8,14 +8,16 @@ RUN	apt-key add /tmp/Release.key && \
 	rm /tmp/Release.key && \
 	echo "deb http://download.opensuse.org/repositories/network:/osmocom:/nightly/Debian_8.0/ ./" > /etc/apt/sources.list.d/osmocom-nightly.list
 
-RUN	apt-get update && apt-get install -y \
-	telnet \
-	libosmocore-dev \
-	libosmo-abis-dev \
-	libosmo-netif-dev \
-	libosmo-sccp-dev \
-	libsmpp34-dev \
-	libgtp-dev
+RUN	apt-get update && \
+	apt-get install -y --no-install-recommends \
+		telnet \
+		libosmocore-dev \
+		libosmo-abis-dev \
+		libosmo-netif-dev \
+		libosmo-sccp-dev \
+		libsmpp34-dev \
+		libgtp-dev &&
+	apt-get clean
 
 WORKDIR	/tmp
 

osmo-stp-master/Dockerfile

@@ -8,10 +8,12 @@ RUN	apt-key add /tmp/Release.key && \
 	rm /tmp/Release.key && \
 	echo "deb http://download.opensuse.org/repositories/network:/osmocom:/nightly/Debian_8.0/ ./" > /etc/apt/sources.list.d/osmocom-nightly.list
 
-RUN	apt-get update && apt-get install -y \
-	telnet \
-	libosmocore-dev \
-	libosmo-netif-dev
+RUN	apt-get update && \
+	apt-get install -y --no-install-recommends \
+		telnet \
+		libosmocore-dev \
+		libosmo-netif-dev && \
+	apt-get clean
 
 WORKDIR	/tmp
 

osmo-virtphy-master/Dockerfile

@@ -8,14 +8,16 @@ RUN	apt-key add /tmp/Release.key && \
 	rm /tmp/Release.key && \
 	echo "deb http://download.opensuse.org/repositories/network:/osmocom:/nightly/Debian_8.0/ ./" > /etc/apt/sources.list.d/osmocom-nightly.list
 
-RUN	apt-get update && apt-get install -y \
-	telnet \
-	libosmocore-dev \
-	libosmo-abis-dev \
-	libosmo-netif-dev \
-	libosmo-sccp-dev \
-	libsmpp34-dev \
-	libgtp-dev
+RUN	apt-get update && \
+	apt-get install -y --no-install-recommends \
+		telnet \
+		libosmocore-dev \
+		libosmo-abis-dev \
+		libosmo-netif-dev \
+		libosmo-sccp-dev \
+		libsmpp34-dev \
+		libgtp-dev && \
+	apt-get clean
 
 WORKDIR	/tmp
 

sctp-test/Dockerfile

@@ -2,8 +2,11 @@ FROM laforge/debian-jessie-build
 
 MAINTAINER Harald Welte <laforge@gnumonks.org>
 
-RUN	apt-get update && apt-get install -y \
-	bison flex
+RUN	apt-get update && \
+	apt-get install -y --no-install-recommends \
+		bison \
+		flex && \
+	apt-get clean
 
 COPY *.patch /tmp/