add output format

.gitignore

@@ -31,4 +31,6 @@ node_modules
 
 # Optional REPL history
 .node_repl_history
-.DS_Store
+.DS_Store
+
+nginx-dbg_1.13.1-1~xenial_amd64.deb

Dockerfile

@@ -3,9 +3,12 @@ FROM hyperknot/baseimage16:1.0.1
 MAINTAINER [email protected]
 
 ENV LC_ALL=en_US.UTF-8 LANG=en_US.UTF-8 LANGUAGE=en_US.UTF-8 \
-    TERM=xterm container=docker DEBIAN_FRONTEND=noninteractive
+    TERM=xterm container=docker DEBIAN_FRONTEND=noninteractive \
+    NGINX_VERSION=1.13.1-1~xenial_amd64.deb
 
-ADD ./build/nginx_1.13.1-1~xenial_amd64.deb /tmp
+ADD ./build/nginx_${NGINX_VERSION} /tmp
+
+# ADD ./build/nginx-dbg_${NGINX_VERSION} /tmp
 
 # start
 RUN \
@@ -17,13 +20,19 @@ RUN \
     && echo "deb http://nginx.org/packages/mainline/ubuntu/ xenial nginx" | tee -a /etc/apt/sources.list \
     && echo "deb-src http://nginx.org/packages/mainline/ubuntu/ xenial nginx" | tee -a /etc/apt/sources.list \
 
-# update repo, install nginx and module to get dependencies
+# update repo
     && apt-get update -y && apt-get upgrade -y --no-install-recommends --no-install-suggests \
     && apt-get install -y --no-install-recommends --no-install-suggests \
        nano libgd3 gettext-base unzip \
     && dpkg --configure -a \
 
-    && dpkg -i nginx_1.13.1-1~xenial_amd64.deb \
+# install nginx
+    && dpkg -i nginx_${NGINX_VERSION} \
+
+#    && dpkg -i nginx-dbg_${NGINX_VERSION} \
+
+# delete dummy conf
+    && rm -rf /etc/nginx/conf.d/default.conf \
 
 # re-enable all default services
     && rm -f /etc/service/syslog-forwarder/down \

README.md

@@ -5,10 +5,9 @@ Nginx module - https://github.com/niiknow/docker-nginx-image-proxy/blob/master/b
 
 Features:
 - [x] image crop offset, credit: https://github.com/bobrik/nginx_image_filter
-- [x] png automatically convert to jpeg if quality < 96, credit: https://github.com/JamesJJ/ngx_http_image_filter_module
 - [x] /healthcheck endpoint
-- [x] 302 redirect to origin server on proxy error
-- [x] empty gif on other errors: 403, 404, 415, 500 or when URL is not on your whitelist 
+- [x] empty gif on other errors: 403, 404, 415, 500, 502, 503, 504
+- [x] convert/force output to another format
 
 # What does this solve?
 You have a huge repository of images that need dynamic resize and cropping.  Cloudinary can be expensive and redundant if you run your own CDN in front of this microservice.
@@ -37,14 +36,15 @@ Option Keys:
 
 ```yml
 code: name - valid values - default
-  q: quality - 1-100 - 96 (default to best in case it's a jpg that already has been optimized) 
+  q: quality - 1..100 - 96 (default to best in case it's previously optimized) 
   w: width - uint - null
   h: height - uint - null
   c: crop - null, 1 - null
   rz: resize - null, 1 - 1
   g: gravity - NorthWest, North, NorthEast, West, Center, East, SouthWest, South, SouthEast *case-sensitive* - NorthWest
   e: sharpen - 1..100 - 0
   r: rotate - 0, 90, 180, 270 - 0
+  ofmt: bmp, jpg, jpeg, png, gif, webp - force output format
 ```
 
 Options Usages:

build/Dockerfile

@@ -5,10 +5,7 @@ MAINTAINER [email protected]
 ENV LC_ALL=en_US.UTF-8 LANG=en_US.UTF-8 LANGUAGE=en_US.UTF-8 \
     TERM=xterm container=docker DEBIAN_FRONTEND=noninteractive 
 
-
-
-ADD ./ubuntu.sh /tmp/
-
+ADD ./src/ /tmp/
 
 # start
 RUN \