Agptek Rocker: Add tools to work with OF update images

Original firmware update is provided as .upt file. This file
is actually ISO9660 image containing uBoot, kernel image and
UBIFS rootfs and additional control files. Installing
bootloader means patching UBIFS rootfs image.

Change-Id: Ica86d1189dc1d5f3131d2035d8b87c8d08ec36b5

tools/agptek_rocker/Dockerfile

@@ -0,0 +1,50 @@
+FROM debian:9
+
+WORKDIR /home/rb
+ENV HOME /home/rb
+
+# Install tools needed
+RUN apt-get update && \
+    DEBIAN_FRONTEND=noninteractive apt-get install -y \
+    build-essential \
+    git \
+    perl \
+    curl \
+    texinfo \
+    flex \
+    bison \
+    bzip2 \
+    gzip \
+    zip \
+    patch \
+    automake \
+    libtool \
+    libtool-bin \
+    autoconf \
+    libmpc-dev \
+    gawk \
+    python \
+    python-lzo \
+    python-setuptools \ 
+    mtd-utils \
+    xorriso && \
+    rm -rf /var/lib/apt/lists/*
+
+# Clone rockbox repository
+RUN cd /home/rb && \
+    git clone https://github.com/wodz/rockbox-wodz.git
+
+# Build cross toolchain (It takes quite long)
+RUN cd /home/rb/rockbox-wodz && \
+    git checkout agptek-rocker && \
+    ./tools/rockboxdev.sh --target=y
+
+# Install tools for unpacking ubifs
+RUN cd /home/rb && \
+    git clone https://github.com/jrspruitt/ubi_reader.git && \
+    cd /home/rb/ubi_reader && \
+    python setup.py install
+
+# Copy build script
+RUN cp /home/rb/rockbox-wodz/tools/agptek_rocker/bootloader_install.sh /usr/local/bin && \
+    chmod 755 /usr/local/bin/bootloader_install.sh