Remove ruby dependency while build portal

Python is already intalled in node image. so we can use python to parse yaml file

Signed-off-by: Qian Deng <dengq@vmware.com>

make/photon/portal/Dockerfile

@@ -2,15 +2,21 @@ FROM node:10.15.0 as nodeportal
 
 RUN mkdir -p /portal_src && mkdir -p /build_dir
 
-COPY make/photon/portal/entrypoint.sh /
 COPY src/portal /portal_src
 COPY ./docs/swagger.yaml /portal_src
 
-WORKDIR /portal_src
+WORKDIR /build_dir
 
-RUN npm install && \
-    chmod u+x /entrypoint.sh
-RUN /entrypoint.sh
+RUN cp -r /portal_src/* /build_dir \
+    && ls -la \
+    && apt-get update \
+    && apt-get install python-yaml \
+    && cat swagger.yaml | python -c 'import sys, yaml, json; y=yaml.load(sys.stdin.read()); print json.dumps(y)' > swagger.json \
+    && cat ./package.json \
+    && npm install \
+    && npm run build_lib \
+    && npm run link_lib \
+    && npm run release
 
 
 FROM photon:2.0

make/photon/portal/entrypoint.sh

@@ -1,21 +0,0 @@
-#!/bin/bash
-set -e
-
-cd /build_dir
-cp -r /portal_src/* .
-ls -la
-
-# Update
-apt-get update
-apt-get install -y ruby
-ruby -ryaml -rjson -e 'puts JSON.pretty_generate(YAML.load(ARGF))' swagger.yaml>swagger.json
-
-cat ./package.json
-npm install
-
-## Build harbor-portal and link it
-npm run build_lib
-npm run link_lib
-
-## Build production
-npm run release

make/photon/portal/nginx.conf

@@ -1,5 +1,4 @@
 
-user nginx nginx;
 worker_processes auto;
 pid /tmp/nginx.pid;