Added Dockerfile.buildozer dependencies

docker/bionic/Dockerfile

@@ -69,6 +69,34 @@ RUN apt-get install -yq --no-install-suggests --no-install-recommends \
 RUN apt-get install -yq --no-install-suggests --no-install-recommends \
     language-pack-en
 
+# Buildozer dependencies
+RUN apt install -qq --yes --no-install-recommends \
+    autoconf \
+    automake \
+    build-essential \
+    ccache \
+    cmake \
+    gettext \
+    git \
+    libffi-dev \
+    libltdl-dev \
+    libssl-dev \
+    libtool \
+    openjdk-8-jdk \
+    patch \
+    pkg-config \
+    python2.7 \
+    python3-pip \
+    python3-venv \
+    python3-setuptools \
+    sudo \
+    unzip \
+    zip \
+    zlib1g-dev
+
+RUN pip3 install "cython==0.28.6"
+RUN pip3 install "buildozer==1.0"
+
 # cleanup
 RUN rm -rf /var/lib/apt/lists/*