feat(chalice): included sourcemaps_reader

It's not advised to run multiple processes in a single docker container.
In Kubernetes we can run this as sidecar, but other platforms such as
Heroku, and vanilla docker doesn't support such feature. So till we
figure out better solution, this is the workaround.

api/Dockerfile

@@ -4,6 +4,14 @@ WORKDIR /work
 COPY . .
 RUN pip install -r requirements.txt -t ./vendor --upgrade
 RUN pip install chalice==1.22.2
+# Installing Nodejs
+RUN apt update && apt install -y curl && \
+    curl -fsSL https://deb.nodesource.com/setup_12.x | bash - && \
+    apt install -y nodejs && \
+    apt remove --purge -y curl && \
+    rm -rf /var/lib/apt/lists/* && \
+    cd sourcemaps_reader && \
+    npm install
 
 # Add Tini
 # Startup daemon
@@ -13,4 +21,4 @@ ENV ENTERPRISE_BUILD ${envarg}
 ADD https://github.com/krallin/tini/releases/download/${TINI_VERSION}/tini /tini
 RUN chmod +x /tini
 ENTRYPOINT ["/tini", "--"]
-CMD python env_handler.py && chalice local --no-autoreload --host 0.0.0.0 --stage ${ENTERPRISE_BUILD}
+CMD ./entrypoint.sh

api/entrypoint.sh

@@ -0,0 +1,6 @@
+#!/bin/bash
+cd sourcemaps_reader
+nohup node server.js &> /tmp/sourcemaps_reader.log &
+cd ..
+python env_handler.py
+chalice local --no-autoreload --host 0.0.0.0 --stage ${ENTERPRISE_BUILD}