Remove external dependencies on jpegtran, optipng, pngcrush and pngqu…

…ant. Depend on binaries through npm dependencies. Refs #627
assetgraph · Oct 21, 2018 · 9140157 · 9140157
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commit 9140157
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diff --git a/Dockerfile b/Dockerfile
@@ -7,12 +7,7 @@ RUN apt-get update \
         libcairo2-dev \
         libgif-dev \
         libgsf-1-dev \
-        libjpeg-progs \
         libpango1.0-dev \
-        libvips-dev \
-        optipng \
-        pngcrush \
-        pngquant \
     && rm -rf /var/lib/apt/lists/*
 
 ENV NPM_CONFIG_PREFIX=/home/node/.npm-global

diff --git a/README.md b/README.md
@@ -82,13 +82,13 @@ and optimization features, you need several libraries and command line
 utilities installed. On Ubuntu you can grab them all by running:
 
 ```
-sudo apt-get install -y libcairo2-dev libjpeg8-dev libgif-dev optipng pngcrush pngquant libpango1.0-dev graphicsmagick libjpeg-progs inkscape
+sudo apt-get install -y libcairo2-dev libjpeg8-dev libgif-dev libpango1.0-dev graphicsmagick inkscape
 ```
 
 Or on OS X, with [homebrew](http://brew.sh/):
 
 ```
-brew install cairo jpeg giflib optipng pngcrush pngquant pango graphicsmagick jpeg-turbo homebrew/gui/inkscape
+brew install cairo giflib pango graphicsmagick jpeg-turbo homebrew/gui/inkscape
 brew install homebrew/science/vips --with-webp --with-graphicsmagick
 export PKG_CONFIG_PATH=/opt/X11/lib/pkgconfig
 ```