FROM alpine:3.9
MAINTAINER Balazs Szekeres <balazs.szekeres@nokia.com>
-ARG KUBEDNS
-ENV KUBEDNS_VERSION=$KUBEDNS
+ARG KUBEDNS_VERSION
ENV GOPATH /build
-ENV PATH /usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
+ARG go_install_dir="/usr/local/go"
+ARG go_version
+ENV PATH="$go_install_dir/bin:$PATH"
RUN apk update \
&& apk upgrade \
&& chown -R kubedns:kubedns /etc \
&& apk add --no-cache --virtual .build-deps build-base git mercurial go glide bash tar curl \
&& apk add --no-cache dnsmasq \
+&& mkdir -p $go_install_dir \
+&& curl -fsSL -k https://dl.google.com/go/go${go_version}.src.tar.gz | tar zx --strip-components=1 -C ${go_install_dir} \
+&& cd ${go_install_dir}/src/ \
+&& ./make.bash \
&& mkdir -p $GOPATH/src/k8s.io/dns \
&& curl -fsSL -k https://github.com/kubernetes/dns/archive/${KUBEDNS_VERSION}.tar.gz | tar zx --strip-components=1 -C $GOPATH/src/k8s.io/dns \
&& cd $GOPATH/src/k8s.io/dns \
&& setcap 'cap_net_bind_service=+ep' /usr/sbin/dnsmasq \
&& apk del .build-deps \
&& rm -rf $GOPATH \
+&& rm -rf $go_install_dir \
&& rm -rf /build \
&& rm -rf /root/.glide