docker: pass version and debug params

Author: x1unix

build/Dockerfile

@@ -3,7 +3,7 @@ COPY web /tmp/web
 WORKDIR /tmp/web
 ARG APP_VERSION="1.0.0"
 ARG GITHUB_URL="https://github.com/x1unix/go-playground"
-RUN REACT_APP_VERSION=${APP_VERSION} REACT_APP_GITHUB_URL=${GITHUB_URL} yarn install --silent && yarn build
+RUN yarn install --silent && REACT_APP_VERSION=$APP_VERSION REACT_APP_GITHUB_URL=$GITHUB_URL yarn build
 
 FROM golang:1.13-alpine as build
 WORKDIR /tmp/playground
@@ -17,8 +17,9 @@ FROM golang:1.13-alpine as production
 WORKDIR /opt/playground
 ENV GOROOT /usr/local/go
 ENV APP_CLEAN_INTERVAL=10m
+ENV APP_DEBUG=false
 COPY data ./data
 COPY --from=ui-build /tmp/web/build ./public
 COPY --from=build /tmp/playground/server .
 EXPOSE 8000
-ENTRYPOINT /opt/playground/server -f=/opt/playground/data/packages.json -addr=:8000 -clean-interval=${APP_CLEAN_INTERVAL}
+ENTRYPOINT /opt/playground/server -f=/opt/playground/data/packages.json -addr=:8000 -clean-interval=${APP_CLEAN_INTERVAL} -debug=${APP_DEBUG}