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FROM amazonlinux:2 AS builder
LABEL maintainer="Mike Crute <mike@crute.us>"

ARG VERSION
ARG REGION

RUN set -euxo pipefail; \
    echo "${REGION}" > /etc/yum/vars/awsregion; \
    amazon-linux-extras install -y kernel-ng; \
    yum install -y \
        libmnl-devel \
        libmnl-static \
        glibc-static \
        elfutils-libelf-devel \
        kernel-devel \
        pkgconfig \
        "@Development Tools" \
    ; \
    curl -Ls https://git.zx2c4.com/WireGuard/snapshot/WireGuard-${VERSION}.tar.xz | tar -xJC /usr/src; \
    cd /usr/src/WireGuard-${VERSION}/src; \
    \
    make module; \
    make LDFLAGS="-static" tools


FROM amazonlinux:2
LABEL maintainer="Mike Crute <mike@crute.us>"

ARG VERSION

COPY --from=builder /usr/src/WireGuard-${VERSION}/ /tmp/WireGuard-${VERSION}/

RUN set -euxo pipefail; \
    yum install -y kmod; \
    \
    mkdir -p /opt/wireguard; \
    cp /tmp/WireGuard-${VERSION}/src/wireguard.ko /opt/wireguard; \
    \
    cd /tmp/WireGuard-${VERSION}/src; \
    \
    install -v -d "/usr/bin"; \
    install -v -d "/usr/share/man/man8"; \
    install -v -m 0755 tools/wg "/usr/bin/wg"; \
    install -v -m 0644 tools/man/wg.8 "/usr/share/man/man8/wg.8"; \
    \
    install -v -m 0700 -d "/etc/wireguard"; \
    install -v -m 0755 tools/wg-quick/linux.bash "/usr/bin/wg-quick"; \
    install -v -m 0644 tools/man/wg-quick.8 "/usr/share/man/man8/wg-quick.8"; \
    \
    yum clean all; \
    rm -rf /tmp/WireGuard-${VERSION} /var/cache/yum

ADD entrypoint.sh /

ENTRYPOINT [ "/entrypoint.sh" ]
CMD [ "sleep", "infinity" ]