Keeping libpng

Dockerfile

@@ -3,9 +3,8 @@ FROM ubuntu:16.04
 # Install dependencies
 RUN apt-get update --yes && apt-get upgrade --yes
 RUN apt-get install git nodejs npm \
-libcairo2-dev libjpeg8-dev libpango1.0-dev libgif-dev build-essential g++ \
+libcairo2-dev libjpeg8-dev libpango1.0-dev libgif-dev libpng-dev build-essential g++ \
 ffmpeg \
-libgroove-dev zlib1g-dev libpng-dev \
 redis-server --yes
 
 RUN ln -s `which nodejs` /usr/bin/node

INSTALL.md

@@ -33,9 +33,8 @@ sudo apt-get update --yes && sudo apt-get upgrade --yes
 # Git
 # node-canvas dependencies (Cairo, Pango, libgif, libjpeg)
 # FFmpeg
-# node-waveform dependencies (libgroove, zlib, libpng)
 sudo apt-get install git nodejs npm \
-libcairo2-dev libjpeg8-dev libpango1.0-dev libgif-dev build-essential g++ \
+libcairo2-dev libjpeg8-dev libpango1.0-dev libgif-dev libpng-dev build-essential g++ \
 ffmpeg \
 --yes