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Dockerfile
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Dockerfile
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# vim:set ft=dockerfile:
FROM debian:buster-slim
ENV HAPROXY_VERSION 2.1.10
ENV HAPROXY_URL https://www.haproxy.org/download/2.1/src/haproxy-2.1.10.tar.gz
ENV HAPROXY_SHA256 d245a06145d1d0cbe62681de84bc23dfc98afe10f8cc5c1422a447722a142a41
# see https://sources.debian.net/src/haproxy/jessie/debian/rules/ for some helpful navigation of the possible "make" arguments
RUN set -eux; \
\
savedAptMark="$(apt-mark showmanual)"; \
apt-get update && apt-get install -y --no-install-recommends \
ca-certificates \
gcc \
libc6-dev \
liblua5.3-dev \
libpcre2-dev \
libssl-dev \
make \
wget \
zlib1g-dev \
; \
rm -rf /var/lib/apt/lists/*; \
\
wget -O haproxy.tar.gz "$HAPROXY_URL"; \
echo "$HAPROXY_SHA256 *haproxy.tar.gz" | sha256sum -c; \
mkdir -p /usr/src/haproxy; \
tar -xzf haproxy.tar.gz -C /usr/src/haproxy --strip-components=1; \
rm haproxy.tar.gz; \
\
makeOpts=' \
TARGET=linux-glibc \
USE_GETADDRINFO=1 \
USE_LUA=1 LUA_INC=/usr/include/lua5.3 \
USE_OPENSSL=1 \
USE_PCRE2=1 USE_PCRE2_JIT=1 \
USE_ZLIB=1 \
\
EXTRA_OBJS=" \
# see https://github.com/docker-library/haproxy/issues/94#issuecomment-505673353 for more details about prometheus support
contrib/prometheus-exporter/service-prometheus.o \
" \
'; \
# https://salsa.debian.org/haproxy-team/haproxy/-/commit/53988af3d006ebcbf2c941e34121859fd6379c70
dpkgArch="$(dpkg --print-architecture)"; \
case "$dpkgArch" in \
armel) makeOpts="$makeOpts ADDLIB=-latomic" ;; \
esac; \
\
nproc="$(nproc)"; \
eval "make -C /usr/src/haproxy -j '$nproc' all $makeOpts"; \
eval "make -C /usr/src/haproxy install-bin $makeOpts"; \
\
mkdir -p /usr/local/etc/haproxy; \
cp -R /usr/src/haproxy/examples/errorfiles /usr/local/etc/haproxy/errors; \
rm -rf /usr/src/haproxy; \
\
apt-mark auto '.*' > /dev/null; \
[ -z "$savedAptMark" ] || apt-mark manual $savedAptMark; \
find /usr/local -type f -executable -exec ldd '{}' ';' \
| awk '/=>/ { print $(NF-1) }' \
| sort -u \
| xargs -r dpkg-query --search \
| cut -d: -f1 \
| sort -u \
| xargs -r apt-mark manual \
; \
apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false
# https://www.haproxy.org/download/1.8/doc/management.txt
# "4. Stopping and restarting HAProxy"
# "when the SIGTERM signal is sent to the haproxy process, it immediately quits and all established connections are closed"
# "graceful stop is triggered when the SIGUSR1 signal is sent to the haproxy process"
STOPSIGNAL SIGUSR1
COPY docker-entrypoint.sh /
ENTRYPOINT ["/docker-entrypoint.sh"]
CMD ["haproxy", "-f", "/usr/local/etc/haproxy/haproxy.cfg"]