Added basic extractor

Dockerfile

@@ -0,0 +1,18 @@
+# Use Python on Alpine Linux as base image
+FROM python:alpine
+
+# Create working directory
+RUN mkdir -p /app
+WORKDIR /app
+
+# Copy requirements.txt to force Docker not to use the cache
+COPY requirements.txt /app
+
+# Install app dependencies
+RUN pip3 install -r requirements.txt
+
+# Copy app source
+COPY . /app
+
+# Define entrypoint of the app
+ENTRYPOINT ["python3", "extractor.py"]