Add Dockerfile.pi for building docker image for raspberry pi

Dockerfile.pi

@@ -0,0 +1,40 @@
+FROM balenalib/raspberrypi3-debian:stretch
+
+RUN [ "cross-build-start" ]
+
+RUN apt-get update \
+ && apt-get -y install wget curl build-essential libssl-dev libffi-dev \
+ && apt-get clean
+
+# Prepare environment
+RUN mkdir /freqtrade
+WORKDIR /freqtrade
+
+# Install TA-lib
+COPY build_helpers/ta-lib-0.4.0-src.tar.gz /freqtrade/
+RUN tar -xzf /freqtrade/ta-lib-0.4.0-src.tar.gz \
+ && cd /freqtrade/ta-lib/ \
+ && ./configure \
+ && make \
+ && make install \
+ && rm /freqtrade/ta-lib-0.4.0-src.tar.gz
+
+ENV LD_LIBRARY_PATH /usr/local/lib
+
+# Install berryconda
+RUN wget https://github.com/jjhelmus/berryconda/releases/download/v2.0.0/Berryconda3-2.0.0-Linux-armv7l.sh \
+ && bash ./Berryconda3-2.0.0-Linux-armv7l.sh -b \
+ && rm Berryconda3-2.0.0-Linux-armv7l.sh
+
+# Install dependencies
+COPY requirements-pi.txt /freqtrade/
+RUN ~/berryconda3/bin/conda install -y numpy pandas scipy \
+ && ~/berryconda3/bin/pip install -r requirements-pi.txt --no-cache-dir
+
+# Install and execute
+COPY . /freqtrade/
+RUN ~/berryconda3/bin/pip install -e . --no-cache-dir
+
+RUN [ "cross-build-end" ]
+
+ENTRYPOINT ["/root/berryconda3/bin/python","./freqtrade/main.py"]

requirements-pi.txt

@@ -0,0 +1,23 @@
+ccxt==1.18.270
+SQLAlchemy==1.2.18
+python-telegram-bot==11.1.0
+arrow==0.13.1
+cachetools==3.1.0
+requests==2.21.0
+urllib3==1.24.1
+wrapt==1.11.1
+scikit-learn==0.20.2
+joblib==0.13.2
+jsonschema==2.6.0
+TA-Lib==0.4.17
+tabulate==0.8.3
+coinmarketcap==5.0.3
+
+# Required for hyperopt
+scikit-optimize==0.5.2
+
+# find first, C search in arrays
+py_find_1st==1.1.3
+
+#Load ticker files 30% faster
+python-rapidjson==0.7.0