Add pillow to default packages (#351)

(cherry picked from commit 81f78ec)

Author: Ivan Zhang

docs/deployments/request-handlers.md

@@ -80,6 +80,7 @@ msgpack==0.6.1
 numpy>=1.13.3,<2
 requirements-parser==0.2.0
 packaging==19.0.0
+pillow==6.1.0
 ```
 
 You can install additional PyPI packages and import your own Python packages. See [Python Packages](../piplines/python-packages.md) for more details.

docs/pipelines/aggregators-custom.md

@@ -48,6 +48,7 @@ msgpack==0.6.1
 numpy>=1.13.3,<2
 requirements-parser==0.2.0
 packaging==19.0.0
+pillow==6.1.0
 ```
 
 You can install additional PyPI packages and import your own Python packages. See [Python Packages](python-packages.md) for more details.

docs/pipelines/estimators-custom.md

@@ -61,6 +61,7 @@ msgpack==0.6.1
 numpy>=1.13.3,<2
 requirements-parser==0.2.0
 packaging==19.0.0
+pillow==6.1.0
 ```
 
 You can install additional PyPI packages and import your own Python packages. See [Python Packages](python-packages.md) for more details.

docs/pipelines/transformers-custom.md

@@ -93,6 +93,7 @@ msgpack==0.6.1
 numpy>=1.13.3,<2
 requirements-parser==0.2.0
 packaging==19.0.0
+pillow==6.1.0
 ```
 
 You can install additional PyPI packages and import your own Python packages. See [Python Packages](python-packages.md) for more details.

images/tf-api/Dockerfile

@@ -1,6 +1,15 @@
 FROM cortexlabs/tf-base
 
 ENV PYTHONPATH="/src:${PYTHONPATH}"
+RUN apt-get update -qq && apt-get install -y -q \
+        build-essential \
+        libfreetype6-dev \
+        libpng-dev \
+        libzmq3-dev \
+        pkg-config \
+        software-properties-common \
+        zlib1g-dev \
+    && apt-get clean -qq && rm -rf /var/lib/apt/lists/*
 
 COPY pkg/workloads/cortex/lib/requirements.txt /src/cortex/lib/requirements.txt
 COPY pkg/workloads/cortex/tf_api/requirements.txt /src/cortex/tf_api/requirements.txt

pkg/workloads/cortex/lib/requirements.txt

@@ -4,3 +4,4 @@ numpy>=1.13.3,<2
 requirements-parser==0.2.0
 packaging==19.0.0
 json_tricks==3.13.1
+pillow==6.1.0