where can i find nginx (stable) for docker? - docker

Question

i'm trying to make a dockerfile that contains Nginx stable latest compiled with vts module .... there is a big problem i'm having that i can't find some automotive link when i put in the docker file it will download and install the latest stable nginx i can only specify a version like 1.14.2 is there a way i can modify my dockerfile to make it download the latest always and not only one version ?
this is my dockerfile
FROM debian:stretch-slim
RUN apt-get update && \
apt-get install -y git wget libreadline-dev libncurses5-dev libpcre3- dev libssl-dev perl make build-essential zlib1g-dev && \
cd /tmp/ && \
wget http://nginx.org/download/nginx-1.14.2.tar.gz && \
git clone git://github.com/vozlt/nginx-module-vts.git && \
tar zxvf nginx-1.14.2.tar.gz && \
rm -f nginx-1.14.2.tar.gz && \
cd nginx-1.14.2 && \
./configure --prefix=/tmp/nginx-1.14.2 --sbin-path=/usr/sbin/nginx -- modules-path=/usr/lib/nginx/modules --conf-path=/etc/nginx/nginx.conf \
--error-log-path=/var/log/nginx/error.log --http-log-path=/var/log/nginx/access.log --pid-path=/var/run/nginx.pid \
--lock-path=/var/run/nginx.lock --http-client-body-temp- path=/var/cache/nginx/client_temp --http-proxy-temp- path=/var/cache/nginx/proxy_temp \
--http-fastcgi-temp-path=/var/cache/nginx/fastcgi_temp --http-uwsgi- temp-path=/var/cache/nginx/uwsgi_temp --http-scgi-temp- path=/var/cache/nginx/scgi_temp \
--user=nginx --group=nginx --with-compat --with-file-aio --with- threads --with-http_addition_module --with-http_auth_request_module \
--with-http_dav_module --with-http_flv_module --with- http_gunzip_module --with-http_gzip_static_module --with-http_mp4_module \
--with-http_random_index_module --with-http_realip_module --with- http_secure_link_module --with-http_slice_module --with-http_ssl_module \
--with-http_stub_status_module --with-http_sub_module --with- http_v2_module --with-mail --with-mail_ssl_module --with-stream \
--with-stream_realip_module --with-stream_ssl_module --with- stream_ssl_preread_module \
--with-cc-opt='-g -O2 -fdebug-prefix-map=/data/builder/debuild/nginx- 1.14.2/debian/debuild-base/nginx-1.14.2=. -specs=/usr/share/dpkg/no-pie- compile.specs -fstack-protector-strong -Wformat -Werror=format-security - Wp,-D_FORTIFY_SOURCE=2 -fPIC' \
--with-ld-opt='-specs=/usr/share/dpkg/no-pie-link.specs -Wl,-z,relro - Wl,-z,now -Wl,--as-needed -pie' \
--add-module=/tmp/nginx-module-vts && \
make && make install && \
cp -f objs/nginx /usr/sbin/nginx && \
apt-get clean && rm -rf /var/lib/apt/lists/*
CMD ["nginx", "-g", "daemon off;"]

Answer 1

If you are looking for an easy way to keep using the stable version during compiling nginx from source as there is no one direct url for it afaik, then you can pass a build argument to your Dockerfile like this:
...
ARG NGINX_STABLE_VERSION
RUN wget http://nginx.org/download/nginx-${NGINX_STABLE_VERSION}.tar.gz
...
And run the build command like below to keep downloading nginx version based on the passed argument:
docker build --build-arg NGINX_STABLE_VERSION=1.14.2 .
However if you are look for how to keep using the official docker image for nginx with your custom modules - assuming all the custom modules you are using support dynamic modules feature like vts module - then you can do it by using multi-stage builds and make use of nginx dynamic modules
feature.
According to nginx-module-vts changelog there is a support for compiling the module as a dynamic module so you can do a multi-stage build that compile nginx with the module you want then copy the generated file to nginx image with the same version to make it work.
Nginx stable images can be found in here tagged with stable word.
All you need to do now is to modify the Dockerfile and make it use the dynamic modules way then add another stage for using the stable image with the new module that was generated from the first stage and you can add an argument during the build for example:
...
ARG NGINX_STABLE_VERSION
RUN wget http://nginx.org/download/nginx-${NGINX_STABLE_VERSION}.tar.gz
...
And run the build like this:
docker build --build-arg NGINX_STABLE_VERSION=1.14.2 .
Update:
Nginx does not provide a one link that you can use to get the stable version every time so you might go with parsing the html of the download page like the following to keep getting the latest download link for the stable version:
We rely on the HTML page which is not the most robust solution on the long term.
echo "http://nginx.org$(curl -s http://nginx.org/en/download.html | grep -oP 'Stable version.*?\K(/download/.*?tar.gz)')"
Output:
http://nginx.org/download/nginx-1.14.2.tar.gz
In your Dockerfile it can be like this:
Make sure that you have curl installed
RUN curl "http://nginx.org$(curl -s http://nginx.org/en/download.html | grep -oP 'Stable version.*?\K(/download/.*?tar.gz)')" --output nginx.tar.gz