Refactor Dockerfile

- Split build stages
- Update list of deb packages to install
- Add volumes for storing data and configs
- Build from local repo instead of doing `git clone`

Dockerfile

@@ -2,34 +2,50 @@
 FROM ubuntu:18.04
 
 # Variable arguments to populate labels
-ARG VERSION=0.9.5
 ARG USER=dexbot
 
 # Set ENV variables
 ENV LC_ALL C.UTF-8
 ENV LANG C.UTF-8
-ENV DEXBOT_HOME_PATH /home/$USER
-ENV DEXBOT_REPO_PATH $DEXBOT_HOME_PATH/repo
-ENV PATH $DEXBOT_HOME_PATH/.local/bin:$PATH
-
-# Update Ubuntu Software repository
-RUN apt-get update
-RUN apt-get install -y software-properties-common
-RUN add-apt-repository universe
-
-# Install  dependencies
-RUN apt-get install -y --install-recommends gcc libssl-dev python3-pip python3-dev python3-async whiptail inetutils-ping wget sudo git
-
-# Create user and change workdir
-RUN groupadd -r $USER && useradd -r -g $USER $USER
-WORKDIR $DEXBOT_HOME_PATH
-RUN chown -R $USER:$USER $DEXBOT_HOME_PATH
-USER dexbot
-
-RUN pip3 install --user pyyaml uptick tabulate ruamel.yaml sqlalchemy ccxt
-
-# Download and Install  DEXBot
-
-RUN git clone https://github.com/Codaone/DEXBot.git -b $VERSION $DEXBOT_REPO_PATH
-RUN cd $DEXBOT_REPO_PATH && make install-user
-RUN rm -rf $DEXBOT_REPO_PATH
+ENV HOME_PATH /home/$USER
+ENV SRC_PATH $HOME_PATH/source
+ENV PATH $HOME_PATH/.local/bin:$PATH
+ENV LOCAL_DATA $HOME_PATH/.local/share
+ENV CONFIG_DATA $HOME_PATH/.config
+
+RUN set -xe ;\
+    apt-get update ;\
+    apt-get install -y software-properties-common ;\
+    add-apt-repository universe ;\
+    # Prepare dependencies
+    apt-get install -y --install-recommends gcc make libssl-dev python3-pip python3-dev python3-async whiptail
+
+RUN set -xe ;\
+    # Create user and change workdir
+    groupadd -r $USER ;\
+    useradd -m -g $USER $USER ;\
+    # Configure permissions (directories must be created with proper owner before VOLUME directive)
+    mkdir -p $SRC_PATH $LOCAL_DATA $CONFIG_DATA ;\
+    chown -R $USER:$USER $HOME_PATH
+
+# Drop priveleges
+USER $USER
+
+WORKDIR $SRC_PATH
+
+# Install dependencies in separate stage to speed up further builds
+COPY requirements.txt $SRC_PATH/
+RUN python3 -m pip install --user -r requirements.txt
+
+# Copy project files
+COPY dexbot $SRC_PATH/dexbot/
+COPY *.py *.cfg Makefile README.md $SRC_PATH/
+
+# Build the project
+RUN set -xe ;\
+    python3 setup.py build ;\
+    python3 setup.py install --user
+
+WORKDIR $HOME_PATH
+
+VOLUME ["$LOCAL_DATA", "$CONFIG_DATA"]