15

Help me please in configuring Nginx with the ngx_http_image_filter_module module for Docker.

I want to create image thumbnails with Nginx. I know that ngx_http_image_filter_module is needed for this. If I take a look at the Dockerfile for Nginx standard container I can see that it is already built with nginx-module-image-filter (I believe it is what I need). But when I try to use image_filter resize 100 100 in Nginx config Docker doesn't start this container and throws an error:

nginx_1 | 2016/11/13 13:28:28 [emerg] 1#1: unknown directive "image_filter" in /etc/nginx/conf.d/nginx.conf:34

nginx_1 | nginx: [emerg] unknown directive "image_filter" in /etc/nginx/conf.d/nginx.conf:34

I have already tried building container with my own Dockerfile, but nothing changed. I used this Dockerfile:

FROM nginx

RUN apt-get update

RUN apt-get install --no-install-recommends --no-install-suggests -y \
                        nginx-module-image-filter

My host config (located under /etc/nginx/conf.d/)

server {
  listen 80;

  location /images/originals/ {
    alias /site/storage/app/public/images/originals/;
    image_filter resize 100 100;
  }
}

Update

Nginx config (standard)

user  nginx;
worker_processes  1;

error_log  /var/log/nginx/error.log warn;
pid        /var/run/nginx.pid;


events {
    worker_connections  1024;
}


http {
    include       /etc/nginx/mime.types;
    default_type  application/octet-stream;

    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';

    access_log  /var/log/nginx/access.log  main;

    sendfile        on;
    #tcp_nopush     on;

    keepalive_timeout  65;

    #gzip  on;

    include /etc/nginx/conf.d/*.conf;
}

Btw, if I bash into nginx container and run nginx -V I get the following:

root@8abdbeab3e2e:/etc/nginx/conf.d# nginx -V

nginx version: nginx/1.11.5

built by gcc 4.9.2 (Debian 4.9.2-10)

built with OpenSSL 1.0.1t 3 May 2016

TLS SNI support enabled

configure arguments: --prefix=/etc/nginx --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 -fstack-protector-strong -Wformat -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2' --with-ld-opt='-Wl,-z,relro -Wl,-z,now -Wl,--as-needed'

As we can see there's no Image filter module here.

Update 2

apt-get install nginx-extras-dbg

root@e124bcecfddc:/# apt-get install nginx-extras-dbg
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following extra packages will be installed:
  init-system-helpers libluajit-5.1-2 libluajit-5.1-common nginx-common nginx-extras
Suggested packages:
  fcgiwrap nginx-doc ssl-cert
The following NEW packages will be installed:
  init-system-helpers libluajit-5.1-2 libluajit-5.1-common nginx-common nginx-extras nginx-extras-dbg
0 upgraded, 6 newly installed, 0 to remove and 10 not upgraded.
Need to get 5920 kB of archives.
After this operation, 7880 kB of additional disk space will be used.
Do you want to continue? [Y/n] Y
Get:1 http://security.debian.org/ jessie/updates/main nginx-common all 1.6.2-5+deb8u4 [88.1 kB]
Get:2 http://security.debian.org/ jessie/updates/main nginx-extras amd64 1.6.2-5+deb8u4 [595 kB]
Get:3 http://security.debian.org/ jessie/updates/main nginx-extras-dbg amd64 1.6.2-5+deb8u4 [4982 kB]
Get:4 http://httpredir.debian.org/debian/ jessie/main libluajit-5.1-common all 2.0.3+dfsg-3 [36.6 kB]
Get:5 http://httpredir.debian.org/debian/ jessie/main libluajit-5.1-2 amd64 2.0.3+dfsg-3 [204 kB]
Get:6 http://httpredir.debian.org/debian/ jessie/main init-system-helpers all 1.22 [14.0 kB]
Fetched 5920 kB in 6s (967 kB/s)
debconf: delaying package configuration, since apt-utils is not installed
Selecting previously unselected package libluajit-5.1-common.
(Reading database ... 9747 files and directories currently installed.)
Preparing to unpack .../libluajit-5.1-common_2.0.3+dfsg-3_all.deb ...
Unpacking libluajit-5.1-common (2.0.3+dfsg-3) ...
Selecting previously unselected package libluajit-5.1-2:amd64.
Preparing to unpack .../libluajit-5.1-2_2.0.3+dfsg-3_amd64.deb ...
Unpacking libluajit-5.1-2:amd64 (2.0.3+dfsg-3) ...
Selecting previously unselected package init-system-helpers.
Preparing to unpack .../init-system-helpers_1.22_all.deb ...
Unpacking init-system-helpers (1.22) ...
Selecting previously unselected package nginx-common.
Preparing to unpack .../nginx-common_1.6.2-5+deb8u4_all.deb ...
Unpacking nginx-common (1.6.2-5+deb8u4) ...
dpkg: error processing archive /var/cache/apt/archives/nginx-common_1.6.2-5+deb8u4_all.deb (--unpack):
 trying to overwrite '/etc/nginx/scgi_params', which is also in package nginx 1.11.5-1~jessie
dpkg-deb: error: subprocess paste was killed by signal (Broken pipe)
Selecting previously unselected package nginx-extras.
Preparing to unpack .../nginx-extras_1.6.2-5+deb8u4_amd64.deb ...
Unpacking nginx-extras (1.6.2-5+deb8u4) ...
dpkg: error processing archive /var/cache/apt/archives/nginx-extras_1.6.2-5+deb8u4_amd64.deb (--unpack):
 trying to overwrite '/usr/sbin/nginx', which is also in package nginx 1.11.5-1~jessie
dpkg-deb: error: subprocess paste was killed by signal (Broken pipe)
Selecting previously unselected package nginx-extras-dbg.
Preparing to unpack .../nginx-extras-dbg_1.6.2-5+deb8u4_amd64.deb ...
Unpacking nginx-extras-dbg (1.6.2-5+deb8u4) ...
Errors were encountered while processing:
 /var/cache/apt/archives/nginx-common_1.6.2-5+deb8u4_all.deb
 /var/cache/apt/archives/nginx-extras_1.6.2-5+deb8u4_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

apt-get install libgd-dev

root@e124bcecfddc:/# apt-get install libgd-dev
Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run 'apt-get -f install' to correct these:
The following packages have unmet dependencies:
 libgd-dev : Depends: libgd3 (= 2.1.0-5+deb8u7) but 2.1.0-5+deb8u6 is to be installed
             Depends: libpng-dev
             Depends: libz-dev
             Depends: libjpeg-dev
             Depends: libfreetype6-dev but it is not going to be installed
             Depends: libxpm-dev but it is not going to be installed
             Depends: libx11-dev but it is not going to be installed
             Depends: libxt-dev but it is not going to be installed
             Depends: libfontconfig-dev
             Depends: libvpx-dev but it is not going to be installed
             Depends: libtiff-dev
 nginx-extras-dbg : Depends: nginx-extras (= 1.6.2-5+deb8u4) but it is not going to be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).

apt-get -f install

root@e124bcecfddc:/# apt-get -f install
Reading package lists... Done
Building dependency tree
Reading state information... Done
Correcting dependencies... Done
The following extra packages will be installed:
  nginx-common nginx-extras
Suggested packages:
  fcgiwrap nginx-doc ssl-cert
The following NEW packages will be installed:
  nginx-common nginx-extras
0 upgraded, 2 newly installed, 0 to remove and 10 not upgraded.
4 not fully installed or removed.
Need to get 683 kB of archives.
After this operation, 1812 kB of additional disk space will be used.
Do you want to continue? [Y/n] Y
Get:1 http://security.debian.org/ jessie/updates/main nginx-common all 1.6.2-5+deb8u4 [88.1 kB]
Get:2 http://security.debian.org/ jessie/updates/main nginx-extras amd64 1.6.2-5+deb8u4 [595 kB]
Fetched 683 kB in 0s (1444 kB/s)
debconf: delaying package configuration, since apt-utils is not installed
(Reading database ... 9786 files and directories currently installed.)
Preparing to unpack .../nginx-common_1.6.2-5+deb8u4_all.deb ...
Unpacking nginx-common (1.6.2-5+deb8u4) ...
dpkg: error processing archive /var/cache/apt/archives/nginx-common_1.6.2-5+deb8u4_all.deb (--unpack):
 trying to overwrite '/etc/nginx/scgi_params', which is also in package nginx 1.11.5-1~jessie
dpkg-deb: error: subprocess paste was killed by signal (Broken pipe)
Preparing to unpack .../nginx-extras_1.6.2-5+deb8u4_amd64.deb ...
Unpacking nginx-extras (1.6.2-5+deb8u4) ...
dpkg: error processing archive /var/cache/apt/archives/nginx-extras_1.6.2-5+deb8u4_amd64.deb (--unpack):
 trying to overwrite '/usr/sbin/nginx', which is also in package nginx 1.11.5-1~jessie
dpkg-deb: error: subprocess paste was killed by signal (Broken pipe)
Errors were encountered while processing:
 /var/cache/apt/archives/nginx-common_1.6.2-5+deb8u4_all.deb
 /var/cache/apt/archives/nginx-extras_1.6.2-5+deb8u4_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

Update 3

I've cleaned up everything, deleted all images and containers and start from scratch.

I use this docker-compose file for my nginx container:

nginx:
    image: nginx
    build:
      context: ./env/nginx
    ports:
      - '80:80'
    volumes:
      - ./env/nginx/abmotors.conf:/etc/nginx/conf.d/abmotors.conf:ro

This is the Dockerfile located at ./env/nginx (for building nginx container)

FROM nginx

RUN apt-get update

RUN apt-get install --no-install-recommends --no-install-suggests -y \
                        libgd-dev \
                        nginx-module-image-filter

Everything builds up, but when I ran and bash into nginx container and run nginx -V it gives me following:

root@7087db72bdb1:/# nginx -V
nginx version: nginx/1.11.6
built by gcc 4.9.2 (Debian 4.9.2-10)
built with OpenSSL 1.0.1t  3 May 2016
TLS SNI support enabled
configure arguments: --prefix=/etc/nginx --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 -fstack-protector-strong -Wformat -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2' --with-ld-opt='-Wl,-z,relro -Wl,-z,now -Wl,--as-needed'

Still no information about libgd nor image-filter module.

Thanks in advance.

Improve this question
3
  • Can you post your entire nginx.conf? When I try to add your server directive to the nginx.conf I get the following error - nginx: [emerg] "server" directive is not allowed here in /etc/nginx/nginx.conf:34 Commented Nov 13, 2016 at 15:11
  • @YaronIdan very sorry for my wrong explanation. That was not the nginx.conf content, but the content of my host config. I've updated the post. Also I've added an output of nginx -V command. Commented Nov 14, 2016 at 21:39
  • @YaronIdan I can show you my docker-compose.yml if it makes sense. Commented Nov 14, 2016 at 21:42

2 Answers 2

Reset to default
25
+50

Nginx introduced dynamic modules in 1.9.11 and "image-filter" is just one of the dynamic modules right now.

Nginx standard Docker image already provides it:

$ docker run -it --rm nginx:mainline ls -l /etc/nginx/modules/ | grep image
-rw-r--r-- 1 root root  23536 Oct 11 15:54 ngx_http_image_filter_module-debug.so
-rw-r--r-- 1 root root  23536 Oct 11 15:54 ngx_http_image_filter_module.so

But the module is not loaded by the default Nginx root configuration file /etc/nginx/nginx.conf, because it is considered "optional". What you need to do is to put the following line into that file:

load_module /etc/nginx/modules/ngx_http_image_filter_module.so;

at the top level! That is where daemon, user, http are defined.

Improve this answer
Sign up to request clarification or add additional context in comments.

4 Comments

Alexander, there seems to be no errors now. I'll make some research and tests and leave a feedback. Thanks for now ;)
Alexander, it worked like a charm! I'm so happy now, thank you very much for this tip!
I may award my bounty in 21 hours, so we have to wait for it.
@VictorRudkov Glad to hear you are happy
0

You'll have to install libdg module most likely. Refer to the documenation here

Try installing it with sudo apt-get install nginx-extras-dbg and recompile.

Improve this answer

4 Comments

I have tried all of this and even more: apt-get -f install. But looks like something is going wrong. I have updated my post with the results, take a look please.
I cleaned up everything – deleted all images and containers. In a couple of minutes I'll start from scratch and post here the results.
@msj I'm also looking into it
I've updated the post with a little more info. See Update 3 pls

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Start asking to get answers

Find the answer to your question by asking.

Ask question

Explore related questions

See similar questions with these tags.