Add freetype-dev to Dockerfile

blooper05 · blooper05 · commit 67a0ef60e7a4 · 2018-06-19T20:27:47.000+09:00
`docker-compose build` occurs an error when installing `matplotlib`,
due to lack of dependent packages.
diff --git a/Dockerfile b/Dockerfile
@@ -19,7 +19,8 @@ libtool \
 python-dev \
 jq \
 g++ \
-make
+make \
+freetype-dev
 
 # clone the repo && Install pre-reqs for pyjq
 COPY . /opt/cloudmapper
