updated node version, moved env setting to before use for better build cache

Author: crispmark

Dockerfile

@@ -1,7 +1,5 @@
 FROM elixir:1.6.0
 
-ENV NODE_VERSION=8.9.2
-
 RUN groupadd --gid 1000 node \
   && useradd --uid 1000 --gid node --shell /bin/bash --create-home node
 
@@ -22,6 +20,8 @@ RUN set -ex \
     gpg --keyserver ha.pool.sks-keyservers.net --recv-keys "$key" ; \
   done
 
+ENV NODE_VERSION=8.9.3
+
 RUN ARCH= && dpkgArch="$(dpkg --print-architecture)" \
   && case "${dpkgArch##*-}" in \
     amd64) ARCH='x64';; \

README.md

@@ -2,6 +2,6 @@
 
 # Supported tags and respective `Dockerfile` links
 
--	[`1.6.0-8.9.2`, `latest` (*Dockerfile*)](https://github.com/SweetIQ/docker-elixir-node-aws/blob/master/Dockerfile)
--	[`1.6.0-8.9.2-slim`, `slim` (*slim/Dockerfile*)](https://github.com/SweetIQ/docker-elixir-node-aws/blob/master/alpine/Dockerfile)
--	[`1.6.0-8.9.2-alpine`, `alpine` (*alpine/Dockerfile*)](https://github.com/SweetIQ/docker-elixir-node-aws/blob/master/alpine/Dockerfile)
+-	[`1.6.0-8.9.3`, `1.6.0`, `1.6`, `latest` (*Dockerfile*)](https://github.com/SweetIQ/docker-elixir-node-aws/blob/master/Dockerfile)
+-	[`1.6.0-8.9.3-slim`, `1.6.0-slim`, `1.6-slim`, `slim` (*slim/Dockerfile*)](https://github.com/SweetIQ/docker-elixir-node-aws/blob/master/alpine/Dockerfile)
+-	[`1.6.0-8.9.3-alpine`, `1.6.0-alpine`, `1.6-alpine`, `alpine` (*alpine/Dockerfile*)](https://github.com/SweetIQ/docker-elixir-node-aws/blob/master/alpine/Dockerfile)

alpine/Dockerfile

@@ -1,6 +1,6 @@
 FROM elixir:1.6.0-alpine
 
-ENV NODE_VERSION=v8.9.2
+ENV NODE_VERSION=v8.9.3
 ENV NPM_VERSION=5
 
 # For base builds

slim/Dockerfile

@@ -1,13 +1,11 @@
 FROM elixir:1.6.0-slim
 
-ENV NODE_VERSION 8.9.2
-
 RUN groupadd --gid 1000 node \
   && useradd --uid 1000 --gid node --shell /bin/bash --create-home node
 
-# install python and curl
+# install python, curl and ca-certificates
 RUN apt-get update \
-    && apt-get install -y --no-install-recommends python-dev curl \
+    && apt-get install -y --no-install-recommends python-dev curl ca-certificates \
     && apt-get clean
 
 # gpg keys listed at https://github.com/nodejs/node#release-team
@@ -27,6 +25,8 @@ RUN set -ex \
     gpg --keyserver ha.pool.sks-keyservers.net --recv-keys "$key" ; \
   done
 
+ENV NODE_VERSION 8.9.3
+
 RUN buildDeps='xz-utils' \
     && ARCH= && dpkgArch="$(dpkg --print-architecture)" \
     && case "${dpkgArch##*-}" in \