Use a local copy of pydetector if it exists

Signed-off-by: Juanjo Alvarez <juanjo@sourced.tech>

Author: Juanjo Alvarez

Dockerfile.build.tpl

@@ -4,7 +4,6 @@ RUN mkdir -p /opt/driver/src && \
     adduser $BUILD_USER -u $BUILD_UID -D -h /opt/driver/src
 
 RUN apk add --no-cache --update python python-dev python3 python3-dev py-pip py2-pip git build-base bash
-RUN pip3 install pydetector-bblfsh==0.10.3 \
-    git+https://github.com/python/mypy.git@0bb2d1680e8b9522108b38d203cb73021a617e64#egg=mypy-lang
+RUN pip3 install git+https://github.com/python/mypy.git@0bb2d1680e8b9522108b38d203cb73021a617e64#egg=mypy-lang
 
 WORKDIR /opt/driver/src

Dockerfile.tpl

@@ -3,11 +3,15 @@ MAINTAINER source{d}
 
 RUN apk add --no-cache --update python python3 py-pip py2-pip git
 
-RUN pip2 install pydetector-bblfsh==0.10.3
 
 ADD build /opt/driver/bin
 ADD native/python_package /tmp/python_driver
 RUN pip3 install /tmp/python_driver
 RUN yes|rm -rf /tmp/python_driver
 
+ADD native/dev_deps /tmp/dev_deps
+RUN pip2 install -U /tmp/dev_deps/python-pydetector || pip2 install pydetector-bblfsh==0.10.3
+RUN pip3 install -U /tmp/dev_deps/python-pydetector || pip3 install pydetector-bblfsh==0.10.3
+RUN yes|rm -rf /tmp/dev_deps
+
 CMD /opt/driver/bin/driver

native/dev_deps/README.md

@@ -0,0 +1,6 @@
+If a pydetector directory exists here, it will be installed to the driver
+container image instead of the one from PyPI. This way you can test pydetector
+features related to the driver without publishing new versions.
+
+Note that Docker doesn't allow to `ADD` symlinks so the directory
+must be copied, not linked.