Various improvements to Docker Image

- Smaller size (from 1.52GB to 875MB)
- Ignore errors with init as repository could already be initialized if
  we restart a running container for example
- Locks down version of wrtc
- Upgrade from node@6 to node@9.5
Docker

Author: victorb

Dockerfile

@@ -1,25 +1,29 @@
-FROM node:6
-
-RUN apt-get update
-RUN apt-get install --yes python2.7 git-all pkg-config libncurses5-dev libssl-dev libnss3-dev libexpat-dev libc6
+FROM node:9.5.0
 
 WORKDIR /usr/src/app
-
-COPY package.json /usr/src/app/package.json
-
-RUN npm install
-RUN npm install wrtc
-
 COPY . /usr/src/app
 
 ENV IPFS_WRTC_LINUX_WINDOWS=1
 ENV IPFS_BOOTSTRAP=1
 ENV IPFS_MONITORING=1
 ENV IPFS_PATH=/root/.jsipfs
 
+ENV BUILD_DEPS='libnspr4 libnspr4-dev libnss3'
+
 EXPOSE 4002
 EXPOSE 4003
 EXPOSE 5002
 EXPOSE 9090
 
+RUN apt-get update \
+  && apt-get install --yes $BUILD_DEPS \
+  && rm -rf /var/lib/apt/lists/* \
+  && npm install --production \
+  && npm install wrtc@0.0.67 --production \
+  && npm cache clear --force \
+  && apt-get purge --yes $BUILD_DEPS \
+  && rm -rf /usr/share/doc /usr/share/locale \
+  && rm -rf /usr/local/share/.cache \
+  && rm -rf node_modules/go-ipfs-dep/go-ipfs/ipfs
+
 CMD ./init-and-daemon.sh

init-and-daemon.sh

@@ -1,6 +1,18 @@
-#! /bin/sh -e
-node src/cli/bin.js init
+#! /usr/bin/env bash
+
+set -e
+
+if [ -n $IPFS_PATH ]; then
+  echo "Using $IPFS_PATH as IPFS repository"
+else
+  echo "You need to set IPFS_PATH environment variable to use this script"
+  exit 1
+fi
 
 sed -i.bak 's/127.0.0.1/0.0.0.0/g' $IPFS_PATH/config
 
+# Initialize the repo but ignore if error if it already exists
+# This can be the case when we restart a container without stopping/removing it
+node src/cli/bin.js init || true
+
 node src/cli/bin.js daemon