Run sort | uniq on packages list in Dockerfile

Removes a lot of duplicates.

android-docker/Dockerfile

@@ -7,59 +7,44 @@ RUN apt update && DEBIAN_FRONTEND=noninteractive apt install -y \
     ccache \
     curl \
     flex \
+    fontconfig \
     g++-multilib \
     gcc-multilib \
     git \
     gnupg \
     gperf \
     imagemagick \
-    libncurses5-dev \
     lib32ncurses5-dev \
     lib32readline-dev \
     lib32z1-dev \
     libbz2-dev \
+    libc6-dev-i386 \
+    libgl1-mesa-dev \
     liblz4-tool \
     libncurses5 \
     libncurses5-dev \
     libreadline-dev \
     libsdl1.2-dev \
     libsqlite3-dev \
     libssl-dev \
+    libx11-dev \
     libxml2 \
     libxml2-utils \
     llvm \
     lzop \
     openjdk-8-jdk \
     pngcrush \
+    python \
+    python3-pip \
     rsync \
     schedtool \
     squashfs-tools \
+    unzip \
     wget \
-    zip \
-    zlib1g-dev \
-    python \
-    python3-pip \
-    libc6-dev-i386 \
-    x11proto-core-dev \
-    libx11-dev \
-    gnupg \
-    flex \
-    bison \
-    build-essential \
-    zip \
-    curl \
-    zlib1g-dev \
-    gcc-multilib \
-    g++-multilib \
-    libc6-dev-i386 \
-    lib32ncurses5-dev \
     x11proto-core-dev \
-    libx11-dev \
-    lib32z1-dev \
-    libgl1-mesa-dev \
     xsltproc \
-    unzip \
-    fontconfig
+    zip \
+    zlib1g-dev
 
 RUN curl -sLo /usr/local/bin/repo https://commondatastorage.googleapis.com/git-repo-downloads/repo && chmod +x /usr/local/bin/repo