`docker build .` failed

[jca02266]

$ docker --version
Docker version 17.12.0-ce, build c97c6d6

docker build . is failed at https://hub.docker.com/r/sdelements/lets-chat/builds/bjqta6msdmqrevvmzyuor3m/

I fixed some problem in Dockerfile

• npm cache clean needs --force option (like this https://github.com/nodejs/docker-node/issues/419)
• the user and the group node already exist
• update node version

$ diff -u Dockerfile{.orig,}
--- Dockerfile.orig	2018-01-24 13:20:44.000000000 +0900
+++ Dockerfile	2018-01-24 15:25:03.000000000 +0900
@@ -1,4 +1,4 @@
-FROM node:0.12-slim
+FROM node:9-slim
 MAINTAINER SD Elements
 
 ENV PKG_JSON_URL=https://raw.githubusercontent.com/sdelements/lets-chat/master/package.json \
@@ -18,7 +18,7 @@
 &&  npm install --production \
 &&  npm install $LCB_PLUGINS \
 &&  npm dedupe \
-&&  npm cache clean \
+&&  npm cache clean --force \
 &&  rm -rf /tmp/npm* \
 &&  apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false -o APT::AutoRemove::SuggestsImportant=false $BUILD_DEPS
 
@@ -28,8 +28,8 @@
 &&  cp -a lets-chat-master/. . \
 &&  rm -rf lets-chat-master
 
-RUN groupadd -r node \
-&&  useradd -r -g node node \
+RUN (groups node || groupadd -r node) \
+&&  (id node || useradd -r -g node node ) \
 &&  chown node:node uploads \
 &&  mkdir -p builtAssets \
 &&  chown node:node builtAssets

This is whole of the file.

FROM node:9-slim
MAINTAINER SD Elements

ENV PKG_JSON_URL=https://raw.githubusercontent.com/sdelements/lets-chat/master/package.json ¥
    TAR_GZ_URL=https://github.com/sdelements/lets-chat/archive/master.tar.gz ¥
    BUILD_DEPS='g++ gcc git make python' ¥
    LCB_PLUGINS='lets-chat-ldap lets-chat-s3'

RUN mkdir -p /usr/src/app
WORKDIR /usr/src/app

ADD $PKG_JSON_URL ./package.json

RUN set -x ¥
&&  apt-get update ¥
&&  apt-get install -y $BUILD_DEPS --no-install-recommends ¥
&&  rm -rf /var/lib/apt/lists/* ¥
&&  npm install --production ¥
&&  npm install $LCB_PLUGINS ¥
&&  npm dedupe ¥
&&  npm cache clean --force ¥
&&  rm -rf /tmp/npm* ¥
&&  apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false -o APT::AutoRemove::SuggestsImportant=false $BUILD_DEPS

ADD $TAR_GZ_URL ./master.tar.gz

RUN tar -xzvf master.tar.gz ¥
&&  cp -a lets-chat-master/. . ¥
&&  rm -rf lets-chat-master

RUN (groups node || groupadd -r node) ¥
&&  (id node || useradd -r -g node node ) ¥
&&  chown node:node uploads ¥
&&  mkdir -p builtAssets ¥
&&  chown node:node builtAssets

ENV LCB_DATABASE_URI=mongodb://mongo/letschat ¥
    LCB_HTTP_HOST=0.0.0.0 ¥
    LCB_HTTP_PORT=8080 ¥
    LCB_XMPP_ENABLE=true ¥
    LCB_XMPP_PORT=5222

USER node

EXPOSE 8080 5222

VOLUME ["/usr/src/app/config"]
VOLUME ["/usr/src/app/uploads"]

CMD ["npm", "start"]