more_clear_headers & more_set_headers does not do anything with the header

[Tzivia-Sofer]

I have nginx plus image , I installed the headers-more-nginx-module,
when I exec the container I see the module inside
I want to remove the header Server: nginx from the server response
I added load_module modules/ngx_http_headers_more_filter_module.so; to my nginx.conf
and when I add to my configuration
location ~ ^/api/entityInventory/(.*) {
more_clear_headers Server;
more_set_headers "Server: my_server";
}
I still see the header Server: nginx

the nginxplus dockerfile is:

FROM debian:bullseye-slim

LABEL maintainer="NGINX Docker Maintainers docker-maint@nginx.com"

ENV NGINX_VERSION 1.19

COPY ./nginx-repo.crt /etc/ssl/nginx/nginx-repo.crt
COPY ./nginx-repo.key /etc/ssl/nginx/nginx-repo.key

RUN --mount=type=secret,id=nginx-crt,dst=nginx-repo.crt
--mount=type=secret,id=nginx-key,dst=nginx-repo.key
set -x
&& addgroup --system --gid 101 nginx
&& adduser --system --disabled-login --ingroup nginx --no-create-home --home /nonexistent --gecos "nginx user" --shell /bin/false --uid 101 nginx
&& apt-get update
&& apt-get install --no-install-recommends --no-install-suggests -y
ca-certificates
gnupg1
lsb-release
&&
NGINX_GPGKEY=573BFD6B3D8FBC641079A6ABABF5BD827BD9BF62;
NGINX_GPGKEY_PATH=/usr/share/keyrings/nginx-archive-keyring.gpg;
export GNUPGHOME="$(mktemp -d)";
found='';
for server in
hkp://keyserver.ubuntu.com:80
pgp.mit.edu
; do
echo "Fetching GPG key $NGINX_GPGKEY from $server";
gpg1 --keyserver "$server" --keyserver-options timeout=10 --recv-keys "$NGINX_GPGKEY" && found=yes && break;
done;
test -z "$found" && echo >&2 "error: failed to fetch GPG key $NGINX_GPGKEY" && exit 1;
gpg1 --export "$NGINX_GPGKEY" > "$NGINX_GPGKEY_PATH" ;
rm -rf "$GNUPGHOME";
apt-get remove --purge --auto-remove -y gnupg1 && rm -rf /var/lib/apt/lists/*
&& nginxPackages="
nginx-plus
nginx-plus-module-headers-more
"
&& echo "Acquire::https::pkgs.nginx.com::Verify-Peer "true";" > /etc/apt/apt.conf.d/90nginx
&& echo "Acquire::https::pkgs.nginx.com::Verify-Host "true";" >> /etc/apt/apt.conf.d/90nginx
&& echo "Acquire::https::pkgs.nginx.com::SslCert "/etc/ssl/nginx/nginx-repo.crt";" >> /etc/apt/apt.conf.d/90nginx
&& echo "Acquire::https::pkgs.nginx.com::SslKey "/etc/ssl/nginx/nginx-repo.key";" >> /etc/apt/apt.conf.d/90nginx
&& printf "deb [signed-by=/usr/share/keyrings/nginx-archive-keyring.gpg] https://pkgs.nginx.com/plus/debian lsb_release -cs nginx-plus\n" > /etc/apt/sources.list.d/nginx-plus.list
&& mkdir -p /etc/ssl/nginx
&& cat nginx-repo.crt > /etc/ssl/nginx/nginx-repo.crt
&& cat nginx-repo.key > /etc/ssl/nginx/nginx-repo.key
&& apt-get update
&& apt-get install --no-install-recommends --no-install-suggests -y
$nginxPackages
curl
gettext-base
&& apt-get remove --purge -y lsb-release
&& $ apt-get install nginx-plus-module-headers-more
&& apt-get remove --purge --auto-remove -y && rm -rf /var/lib/apt/lists/* /etc/apt/sources.list.d/nginx-plus.list
&& rm -rf /etc/apt/apt.conf.d/90nginx /etc/ssl/nginx
&& ln -sf /dev/stdout /var/log/nginx/access.log
&& ln -sf /dev/stderr /var/log/nginx/error.log

EXPOSE 80

STOPSIGNAL SIGQUIT

CMD ["nginx", "-g", "daemon off;"]

[lynch1981]

i can not reproduce this issue, can you show the output of curl?
curl -i http://yourdomain/api/entityInventory/anything

[somnathpawar]

I am also facing the same issue and reported on another ticket: openresty/headers-more-nginx-module#161

Did you find any resolution for this? Interestingly, it cleans other headers but not Server header.
Here is the CURL output for my URL:

[Tzivia-Sofer]

as long as I saw, the header is hard coded in the nginx image.
it is possible to remove it with nginx plus and more_clear_headers plugin installed in it.
attaching the nginx plus dockerfile:
FROM debian:bullseye-slim

LABEL maintainer="NGINX Docker Maintainers docker-maint@nginx.com"

Define NGINX versions for NGINX Plus and NGINX Plus modules

Uncomment this block and the versioned nginxPackages block in the main RUN

ENV NGINX_VERSION 29

ENV NJS_VERSION 0.7.12

ENV PKG_RELEASE 1~bullseye

COPY ./nginx-repo.crt /etc/ssl/nginx/nginx-repo.crt
COPY ./nginx-repo.key /etc/ssl/nginx/nginx-repo.key

RUN --mount=type=secret,id=nginx-crt,dst=nginx-repo.crt
--mount=type=secret,id=nginx-key,dst=nginx-repo.key
set -x
&& addgroup --system --gid 101 nginx
&& adduser --system --disabled-login --ingroup nginx --no-create-home --home /nonexistent --gecos "nginx user" --shell /bin/false --uid 101 nginx
&& apt-get update
&& apt-get install --no-install-recommends --no-install-suggests -y
ca-certificates
gnupg1
lsb-release
&&
NGINX_GPGKEY=573BFD6B3D8FBC641079A6ABABF5BD827BD9BF62;
NGINX_GPGKEY_PATH=/usr/share/keyrings/nginx-archive-keyring.gpg;
export GNUPGHOME="$(mktemp -d)";
found='';
for server in
hkp://keyserver.ubuntu.com:80
pgp.mit.edu
; do
echo "Fetching GPG key $NGINX_GPGKEY from $server";
gpg1 --keyserver "$server" --keyserver-options timeout=10 --recv-keys "$NGINX_GPGKEY" && found=yes && break;
done;
test -z "$found" && echo >&2 "error: failed to fetch GPG key $NGINX_GPGKEY" && exit 1;
gpg1 --export "$NGINX_GPGKEY" > "$NGINX_GPGKEY_PATH" ;
rm -rf "$GNUPGHOME";
apt-get remove --purge --auto-remove -y gnupg1 && rm -rf /var/lib/apt/lists/*
&& nginxPackages="
nginx-plus
nginx-plus-module-headers-more
nginx-plus-module-njs
"
&& echo "Acquire::https::pkgs.nginx.com::Verify-Peer "true";" > /etc/apt/apt.conf.d/90nginx
&& echo "Acquire::https::pkgs.nginx.com::Verify-Host "true";" >> /etc/apt/apt.conf.d/90nginx
&& echo "Acquire::https::pkgs.nginx.com::SslCert "/etc/ssl/nginx/nginx-repo.crt";" >> /etc/apt/apt.conf.d/90nginx
&& echo "Acquire::https::pkgs.nginx.com::SslKey "/etc/ssl/nginx/nginx-repo.key";" >> /etc/apt/apt.conf.d/90nginx
&& printf "deb [signed-by=/usr/share/keyrings/nginx-archive-keyring.gpg] https://pkgs.nginx.com/plus/debian lsb_release -cs nginx-plus\n" > /etc/apt/sources.list.d/nginx-plus.list
&& mkdir -p /etc/ssl/nginx
&& apt-get update
&& apt-get install --no-install-recommends --no-install-suggests -y
$nginxPackages
curl
gettext-base
&& apt-get remove --purge -y lsb-release
&& apt-get install nginx-plus-module-headers-more
&& apt-get remove --purge --auto-remove -y && rm -rf /var/lib/apt/lists/* /etc/apt/sources.list.d/nginx-plus.list
&& rm -rf /etc/apt/apt.conf.d/90nginx /etc/ssl/nginx
&& ln -sf /dev/stdout /var/log/nginx/access.log
&& ln -sf /dev/stderr /var/log/nginx/error.log

EXPOSE 80

STOPSIGNAL SIGQUIT

CMD ["nginx", "-g", "daemon off;"]

and in you nginx.conf:
more_clear_headers Server;