HAProxy configuration and lua scripts implementing a challenge-response page where visitors solve a captcha and/or proof-of-work (cpu intensive) task. Intended to stop bots, spam, ddos, etc.
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#
# NOTE: THIS DOCKERFILE IS GENERATED VIA "apply-templates.sh"
#
# PLEASE DO NOT EDIT IT DIRECTLY.
#
FROM debian:buster-slim
# roughly, https://salsa.debian.org/haproxy-team/haproxy/-/blob/732b97ae286906dea19ab5744cf9cf97c364ac1d/debian/haproxy.postinst#L5-6
RUN set -eux; \
groupadd --gid 99 --system haproxy; \
useradd \
--gid haproxy \
--home-dir /var/lib/haproxy \
--no-create-home \
--system \
--uid 99 \
haproxy
ENV HAPROXY_URL http://www.haproxy.org/download/2.8/src/snapshot/haproxy-ss-LATEST.tar.gz
ENV DATAPLANEAPI_URL https://github.com/haproxytech/dataplaneapi/releases/download/v2.7.5/dataplaneapi_2.7.5_Linux_x86_64.tar.gz
# see https://sources.debian.net/src/haproxy/jessie/debian/rules/ for some helpful navigation of the possible "make" arguments
RUN set -eux; \
\
savedAptMark="$(apt-mark showmanual)"; \
apt-get update && apt-get install -y --no-install-recommends \
ca-certificates \
gcc \
libc6-dev \
liblua5.3-dev \
libpcre2-dev \
libssl-dev \
make \
wget \
zlib1g-dev \
luarocks \
; \
rm -rf /var/lib/apt/lists/*; \
# \
# wget -O dataplaneapi_Linux_x86_64.tar.gz "$DATAPLANEAPI_URL"; \
# tar -zxvf dataplaneapi_Linux_x86_64.tar.gz; \
# chmod +x build/dataplaneapi; \
# cp build/dataplaneapi /usr/local/bin/; \
\
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 \
'; \
# 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 $makeOpts"; \
\
mkdir -p /etc/haproxy; \
cp -R /usr/src/haproxy/examples/errorfiles /etc/haproxy/errors; \
rm -rf /usr/src/haproxy; \
\
apt-mark auto '.*' > /dev/null; \
[ -z "$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; \
\
# smoke test
haproxy -v
# 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
ADD haproxy/dataplaneapi.yml /etc/haproxy/dataplaneapi.yml
ADD haproxy/docker-entrypoint.sh /usr/local/bin/
RUN ln -s usr/local/bin/docker-entrypoint.sh / # backwards compat
RUN apt update && apt install -y git lua5.3 liblua5.3-dev argon2 libargon2-dev luarocks
RUN git config --global url."https://".insteadOf git://
RUN luarocks install argon2
ENTRYPOINT ["/usr/local/bin/docker-entrypoint.sh"]
# no USER for backwards compatibility (to try to avoid breaking existing users)
CMD ["haproxy", "-f", "/etc/haproxy/haproxy.cfg"]