From 056a152b8ab1660db433ca0005ae2ea0ec7020a6 Mon Sep 17 00:00:00 2001
From: Gajus Kuizinas <gajus@gajus.com>
Date: Thu, 23 Mar 2017 21:02:17 +0000
Subject: [PATCH] feat: add libelf1

libelf1 is required by Flowtype (https://flowtype.org/) to store binaries and extract them at the runtime. Running `flow-bin` on a machine without libelf1 will product the following error:

```
/srv/node_modules/flow-bin/flow-linux64-v0.41.0/flow: error while loading shared libraries: libelf.so.1: cannot open shared object file: No such file or directory
```

https://www.npmjs.com/package/flow-bin is a popular program (over 880k downloads a month). Lack of an official Node.js image with flow-bin support results in a lot of avoidable image builds for the sole purpose of adding libelf1.

Adding libelf1 increases the final image size by 2MB (from 666MB to 668MB, measured using the 7.7 base image).
---
 4.8/Dockerfile  | 6 +++++-
 6.10/Dockerfile | 6 +++++-
 7.7/Dockerfile  | 6 +++++-
 3 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/4.8/Dockerfile b/4.8/Dockerfile
index 3e67d2a5af..c59dab53ba 100644
--- a/4.8/Dockerfile
+++ b/4.8/Dockerfile
@@ -21,7 +21,11 @@ RUN set -ex \
 ENV NPM_CONFIG_LOGLEVEL info
 ENV NODE_VERSION 4.8.1
 
-RUN curl -SLO "https://nodejs.org/dist/v$NODE_VERSION/node-v$NODE_VERSION-linux-x64.tar.xz" \
+RUN set -ex \
+  && apt-get update \
+  && apt-get install -y libelf1 \
+  && rm -rf /var/lib/apt/lists/* \
+  && curl -SLO "https://nodejs.org/dist/v$NODE_VERSION/node-v$NODE_VERSION-linux-x64.tar.xz" \
   && curl -SLO "https://nodejs.org/dist/v$NODE_VERSION/SHASUMS256.txt.asc" \
   && gpg --batch --decrypt --output SHASUMS256.txt SHASUMS256.txt.asc \
   && grep " node-v$NODE_VERSION-linux-x64.tar.xz\$" SHASUMS256.txt | sha256sum -c - \
diff --git a/6.10/Dockerfile b/6.10/Dockerfile
index 9a154801d2..51b7f601b3 100644
--- a/6.10/Dockerfile
+++ b/6.10/Dockerfile
@@ -21,7 +21,11 @@ RUN set -ex \
 ENV NPM_CONFIG_LOGLEVEL info
 ENV NODE_VERSION 6.10.1
 
-RUN curl -SLO "https://nodejs.org/dist/v$NODE_VERSION/node-v$NODE_VERSION-linux-x64.tar.xz" \
+RUN set -ex \
+  && apt-get update \
+  && apt-get install -y libelf1 \
+  && rm -rf /var/lib/apt/lists/* \
+  && curl -SLO "https://nodejs.org/dist/v$NODE_VERSION/node-v$NODE_VERSION-linux-x64.tar.xz" \
   && curl -SLO "https://nodejs.org/dist/v$NODE_VERSION/SHASUMS256.txt.asc" \
   && gpg --batch --decrypt --output SHASUMS256.txt SHASUMS256.txt.asc \
   && grep " node-v$NODE_VERSION-linux-x64.tar.xz\$" SHASUMS256.txt | sha256sum -c - \
diff --git a/7.7/Dockerfile b/7.7/Dockerfile
index 2bfd8690e7..51c5d8a7f8 100644
--- a/7.7/Dockerfile
+++ b/7.7/Dockerfile
@@ -21,7 +21,11 @@ RUN set -ex \
 ENV NPM_CONFIG_LOGLEVEL info
 ENV NODE_VERSION 7.7.4
 
-RUN curl -SLO "https://nodejs.org/dist/v$NODE_VERSION/node-v$NODE_VERSION-linux-x64.tar.xz" \
+RUN set -ex \
+  && apt-get update \
+  && apt-get install -y libelf1 \
+  && rm -rf /var/lib/apt/lists/* \
+  && curl -SLO "https://nodejs.org/dist/v$NODE_VERSION/node-v$NODE_VERSION-linux-x64.tar.xz" \
   && curl -SLO "https://nodejs.org/dist/v$NODE_VERSION/SHASUMS256.txt.asc" \
   && gpg --batch --decrypt --output SHASUMS256.txt SHASUMS256.txt.asc \
   && grep " node-v$NODE_VERSION-linux-x64.tar.xz\$" SHASUMS256.txt | sha256sum -c - \