[PATCH] docker: Install libpq-dev to fix psycopg2-binary build

[Russell Currey]

psycopg2-binary fails if pg_config isn't installed, which is provided by
libpq-dev.

This seems strange to me since psycopg2-binary suggests that
you use psycopg2-binary instead (of itself) if you don't want to build
psycopg2 so you wouldn't need pg_config, which is very confusing.

It's possible that psycopg2-binary only needs to compile itself on
non-x86 platforms, since I hit this on ppc64le.

Anyway, it works when this is added.

Signed-off-by: Russell Currey <ruscur at russell.cc>
---
 tools/docker/Dockerfile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/docker/Dockerfile b/tools/docker/Dockerfile
index b9ecdb5..eef40e4 100644
--- a/tools/docker/Dockerfile
+++ b/tools/docker/Dockerfile
@@ -26,7 +26,7 @@ RUN apt-get update -qq && \
     python3.5-dev python3-pip python3-setuptools python3-wheel \
     python3.4-dev findutils=4.4.2-7 python3.6-dev \
     libmysqlclient-dev mysql-client curl unzip build-essential \
-    git postgresql-client tzdata
+    git postgresql-client tzdata libpq-dev
 
 # User
 RUN useradd --uid=$UID --create-home patchwork
-- 
2.21.0