Task #9127: minor updates to top-level INSTALL and README

INSTALL

@@ -37,8 +37,8 @@ package manager. For almost all cases, you also need the development packages
 For Debian/Ubuntu (likely incomplete list, but goes a long way):
 
 	apt-get install subversion cmake make g++ gfortran python-dev python-numpy
-	apt-get install libboost-dev libblitz0-dev libfftw3-dev libcfitsio3-dev libxml2-dev
-	apt-get install libpng-dev                           # for AOFlagger
+	apt-get install libboost-dev libblitz0-dev libfftw3-dev libcfitsio3-dev libxml2-dev liblog4cplus-dev
+	apt-get install libpng12-dev                         # or latest version; for AOFlagger
 	apt-get install libreadline-dev libpqxx-dev doxygen  # optional
 	apt-get install libgsl0-dev                          # optional, for AOFlagger's RayleighFitter
 	apt-get install libgtkmm-[2.4|3.0]-dev libsigc++-2.0-dev  # optional, for AOFlagger's rficonsole
@@ -102,8 +102,8 @@ Instructions for Manual Build from Source
   All tests should pass, however, a few packages (not selected above) require
   GPU hardware or a database to pass all tests.
 
-- You may want to add the installation path bin/ to your PATH:
+- You may want to add the installation path bin/ to your PATH by sourcing (not executing!) the lofarinit script:
 
-	source "$HOME/local/$LOFAR_RELEASE/lofarinit.sh"  # for Bourne-like shells, or
-	source "$HOME/local/$LOFAR_RELEASE/lofarinit.csh" # for C-like shells
+	. "$HOME/local/$LOFAR_RELEASE/lofarinit.sh"  # for Bourne-like shells, or
+	. "$HOME/local/$LOFAR_RELEASE/lofarinit.csh" # for C-like shells
 

README

@@ -27,6 +27,7 @@ CMake/			CMake configuration & build helper scripts
 CMake/variants/		compiler- and hostname-specific build configurations
 CMakeLists.txt		Top-level CMake configuration & build script
 COPYING			License text
+Docker/			Docker container templates and build scripts
 INSTALL			Build and installation instructions
 LCS/			LOFAR Common Software: frequently used LOFAR libraries
 LCS/LofarStMan/		LOFAR Storage Manager for casacore MeasurementSets