openvpn-static.Dockerfile

FROM	alpine
RUN	apk update; \
	apk --no-cache upgrade; \
	apk add --no-cache bash
SHELL	["/bin/bash", "-o", "pipefail", "-xec"]
RUN	apk add --no-cache autoconf automake file gcc git libcap-static libcap-ng libcap-ng-dev libcap-ng-static libnsl-static libltdl-static libtool linux-headers lz4-dev lz4-static make musl-dev openssl1.1-compat-dev openssl1.1-compat-libs-static pkgconfig
WORKDIR	/usr/local/src/openvpn
RUN	git clone --branch=v2.5.8 --depth=1 https://github.com/OpenVPN/openvpn $(pwd)
RUN	autoreconf -i -v -f; \
	./configure --enable-static --enable-iproute2 --disable-shared --disable-plugins --disable-selinux-build --disable-tap --disable-lzo; \
	make LIBS="-all-static"
RUN	strip ./src/openvpn/openvpn; \
	du -sh ./src/openvpn/openvpn; \
	file ./src/openvpn/openvpn; \
	LD_TRACE_LOADED_OBJECTS=1 ./src/openvpn/openvpn --version; \
	mv ./src/openvpn/openvpn /sbin/openvpn

FROM	alpine
COPY	--from=0 /sbin/openvpn /sbin/openvpn