Add ability for image to read env from a file by _FILE suffix #175

Dockerfile

@@ -1,10 +1,15 @@
 FROM mhart/alpine-node:8.9.1
 
-RUN apk update && apk upgrade && apk add git && apk add python && apk add make && apk add g++ && npm i -g yarn
+WORKDIR /usr/src/app
+ADD . .
+ADD custom-entrypoint.sh /usr/local/bin/custom-entrypoint.sh
+
+RUN chmod 755 /usr/local/bin/custom-entrypoint.sh && apk add --update --no-cache git python make g++ && \
+    npm i -g yarn && \
+    yarn install
 
-VOLUME /usr/src/app
 EXPOSE 3000
 EXPOSE 4000
-WORKDIR /usr/src/app
-
 
+ENTRYPOINT ["/usr/local/bin/custom-entrypoint.sh"]
+CMD ["npm", "start"]

Dockerfile.prod

@@ -1,17 +1,21 @@
 FROM mhart/alpine-node:8.6
 
-RUN mkdir -p /usr/src/app
-ADD . /usr/src/app
-
 WORKDIR /usr/src/app
 
-RUN mkdir -p /usr/src/app/dist
-RUN cp -r src/certs dist/
+ADD . .
+ADD custom-entrypoint.sh /usr/local/bin/custom-entrypoint.sh
 
+RUN chmod 755 /usr/local/bin/custom-entrypoint.sh && mkdir -p /usr/src/app/dist && cp -r src/certs dist/
 RUN apk add --update --no-cache git python make g++ && \
     npm i -g yarn && \
     yarn install && \
+    yarn run build && \
+    yarn install --prod && \
     apk del --purge git python make g++ && \
     rm -rf ./src
 
-CMD npm run serve
+EXPOSE 3000
+EXPOSE 4000
+
+ENTRYPOINT ["/usr/local/bin/custom-entrypoint.sh"]
+CMD ["npm", "run", "serve"]

custom-entrypoint.sh

@@ -0,0 +1,12 @@
+#!/bin/sh
+
+for env in $(env); do
+  echo $env | grep '_FILE=' || continue
+  key=${env%=*}
+  val=${env#*=}
+  key=${key%_FILE}
+  val=$(cat $val)
+  export "${key}"="${val}"
+done
+
+exec "$@"