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Fix binding to privileged ports 1 to 1023 #3038

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Fix binding to privileged ports 1 to 1023 #3038

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9 changes: 9 additions & 0 deletions rootfs/Dockerfile
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Original file line number Diff line number Diff line change
Expand Up @@ -21,6 +21,7 @@ WORKDIR /etc/nginx
RUN clean-install \
diffutils \
valgrind \
libcap2-bin \
dumb-init

COPY . /
Expand All @@ -39,10 +40,18 @@ RUN bash -eu -c ' \
for dir in "${writeDirs[@]}"; do \
mkdir -p ${dir}; \
chown -R www-data.www-data ${dir}; \
done \
&& for value in {1..1023};do \
touch /etc/authbind/byport/$value; \
chown www-data /etc/authbind/byport/$value; \
chmod 755 /etc/authbind/byport/$value; \
done' \
&& chown www-data.www-data /etc/nginx/nginx.conf \
&& chown www-data.www-data /etc/nginx/opentracing.json

RUN setcap cap_net_bind_service=+ep /nginx-ingress-controller \
&& setcap -v cap_net_bind_service=+ep /nginx-ingress-controller

# Create symlinks to redirect nginx logs to stdout and stderr docker log collector
# This only works if nginx is started with CMD or ENTRYPOINT
RUN ln -sf /dev/stdout /var/log/nginx/access.log
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