Adding docker based build

build/docker/Dockerfile

+FROM jc21/rpmbuild-centos6
+
+USER root
+
+# for convenience, otherwise they would need to be fetched on every RPM build
+RUN yum install -y ant armadillo-devel chrpath curl-devel doxygen fontconfig-devel geos-devel ghostscript "java-devel >= 1:1.6.0" jpackage-utils libgcj libjpeg-devel libpng-devel libtool librx-devel numpy "perl(ExtUtils::MakeMaker)" pkgconfig proj-devel python-devel ruby ruby-devel swig tetex-latex xz-devel zlib-devel
+RUN yum install -y  bash-completion cfitsio-devel expat-devel freexl-devel g2clib-devel giflib-devel hdf-devel jasper-devel json-c-devel libdap-devel libgeotiff-devel libgta-devel libtiff-devel libtirpc-devel libwebp-devel netcdf-devel ogdi-devel openjpeg2-devel pcre-devel perl-generators poppler-devel python2-numpy sqlite-devel unixODBC-devel xerces-c-devel
+
+# Necessary to use devtoolset-7 for newer GDAL versions
+RUN yum install -y centos-release-scl && yum upgrade -y && yum install -y devtoolset-7
+
+ADD build-spec-devtoolset-7.sh /bin/
+RUN chmod +x /bin/build-spec-devtoolset-7.sh
+
+USER rpmbuilder

build/docker/Readme.md

+# Docker-based build
+
+
+Base image taken from here: https://github.com/jc21/docker-rpmbuild-centos6
+
+```
+cd builder/build
+
+```
+
+
+Build and tag the docker file:
+```
+cd docker/
+docker build . -t my-rpmbuild-centos6
+cd ..
+```
+
+Run the build on a single spec file (Using devtoolset-7)
+```
+docker run --name rpmbuild-centos6 -v `pwd`:/home/rpmbuilder/rpmbuild --rm=true my-rpmbuild-centos6 /bin/build-spec-devtoolset-7.sh /home/rpmbuilder/rpmbuild/SPECS/gdal.spec
+```
+
+
+Build single spec file without devtoolset-7:
+```
+docker run --name rpmbuild-centos6 -v `pwd`:/home/rpmbuilder/rpmbuild --rm=true my-rpmbuild-centos6 /bin/build-spec /home/rpmbuilder/rpmbuild/SPECS/some.spec
+```
+
+Build all spec files in `SPECS`:
+
+```
+docker run --name rpmbuild-centos6 -v `pwd`:/home/rpmbuilder/rpmbuild --rm=true my-rpmbuild-centos6 /bin/build-all
+```

build/docker/build-spec-devtoolset-7.sh

+#!/bin/bash
+
+getopt --test > /dev/null
+if [[ $? -ne 4 ]]; then
+    echo "I’m sorry, `getopt --test` failed in this environment."
+    exit 1
+fi
+
+##############################################
+# show_help                                  #
+##############################################
+function show_help {
+    echo "Please specify the name of a spec package to build."
+    echo ""
+    echo "Usage: $0 [-r dependancy.rpm] /path/to/specfile [/path/to/specfile] [/path/to/specfile]"
+    echo "  -u      Uninstalls specified yum package first"
+    echo "  -p      Installs specified yum package next"
+    echo "  -r      Installs the specified RPM next"
+    echo "  -b      Skip broken packages in RPM install, only applies with -r and/or -p"
+    echo "  -o      Set yum to ignore obsoletes"
+    echo ""
+    echo "Example: $0 -r RPMS/x86_64/php.rpm -r RPMS/noarch/slack.rpm SPECS/php-memcache.spec"
+    echo ""
+}
+
+SHORT=p:u:br:ho
+LONG=help
+
+# -temporarily store output to be able to check for errors
+# -activate advanced mode getopt quoting e.g. via “--options”
+# -pass arguments only via   -- "$@"   to separate them correctly
+PARSED=$(getopt --options $SHORT --longoptions $LONG --name "$0" -- "$@")
+if [[ $? -ne 0 ]]; then
+    # e.g. $? == 1
+    #  then getopt has complained about wrong arguments to stdout
+    exit 2
+fi
+# use eval with "$PARSED" to properly handle the quoting
+eval set -- "$PARSED"
+
+upackages=""
+packages=""
+rpmfiles=""
+skip_broken=""
+obsoletes=""
+
+# now enjoy the options in order and nicely split until we see --
+while true; do
+    case "$1" in
+        -u)
+            upackages+="$2 "
+            shift 2
+            ;;
+        -p)
+            packages+="$2 "
+            shift 2
+            ;;
+        -o)
+            obsoletes="--setopt=obsoletes=0"
+            shift 1
+            ;;
+        -r)
+            rpmfiles+="$2 "
+            shift 2
+            ;;
+        -h|--help)
+            show_help
+            exit 1
+            ;;
+        -b)
+            skip_broken="--skip-broken"
+            shift
+            ;;
+        --)
+            shift
+            break
+            ;;
+        *)
+            echo "Programming error"
+            exit 3
+            ;;
+    esac
+done
+
+# handle non-option arguments
+if [[ $# -eq 0 ]]; then
+    show_help
+    exit 1
+fi
+
+# Yum cleaning
+sudo yum clean all
+sudo rm -rf rm -rf /var/cache/yum
+
+cd ~/rpmbuild
+
+## Uninstall PACKAGES
+if [ -n "$upackages" ]; then
+    echo "Uninstalling Yum Packages ..."
+    sudo yum -y erase $upackages
+    rc=$?; if [[ $rc != 0 ]]; then exit $rc; fi
+    echo "Done uninstalling Yum Packages"
+fi
+
+## Install PACKAGES
+if [ -n "$packages" ]; then
+    echo "Installing Yum Packages ..."
+    sudo yum -y $skip_broken $obsoletes install $packages
+    rc=$?; if [[ $rc != 0 ]]; then exit $rc; fi
+    echo "Done installing Yum Packages"
+fi
+
+## Install RPMS
+if [ -n "$rpmfiles" ]; then
+    echo "Installing RPMs ..."
+    sudo yum -y $skip_broken $obsoletes localinstall $rpmfiles
+    rc=$?; if [[ $rc != 0 ]]; then exit $rc; fi
+    echo "Done installing built RPMs"
+fi
+
+
+## Build Spec
+echo "BUILDING: $@ ..."
+cd ~/rpmbuild
+
+sudo yum-builddep -y $1
+rc=$?; if [[ $rc != 0 ]]; then exit $rc; fi
+
+scl enable devtoolset-7 "rpmbuild --clean -ba $@"
+rc=$?; if [[ $rc != 0 ]]; then exit $rc; fi
+
+