From 3ef71a6ea057c7ad8b87933f06861e9973660b51 Mon Sep 17 00:00:00 2001
From: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>
Date: Tue, 5 Feb 2019 11:44:40 +0000
Subject: [PATCH] Docker: only copy what we need to the build image (#4562)

There are two reasons this is a good thing:

 * first, it means that you don't end up with stuff kicking around your working
   copy ending up in the build image by mistake (which can upset the pip
   install process)

 * second: it means that the docker image cache is more effective, and we can
   reuse docker images when iterating on the docker stuff.
---
 changelog.d/4562.misc | 1 +
 docker/Dockerfile     | 5 ++++-
 2 files changed, 5 insertions(+), 1 deletion(-)
 create mode 100644 changelog.d/4562.misc

diff --git a/changelog.d/4562.misc b/changelog.d/4562.misc
new file mode 100644
index 0000000000..f7185fa768
--- /dev/null
+++ b/changelog.d/4562.misc
@@ -0,0 +1 @@
+Docker: only copy what we need to the build image
diff --git a/docker/Dockerfile b/docker/Dockerfile
index 4b739e7d02..d212334844 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -31,7 +31,10 @@ RUN pip install --prefix="/install" --no-warn-script-location \
 
 # now install synapse and all of the python deps to /install.
 
-COPY . /synapse
+COPY synapse /synapse/synapse/
+COPY scripts /synapse/scripts/
+COPY MANIFEST.in README.rst setup.py synctl /synapse/
+
 RUN pip install --prefix="/install" --no-warn-script-location \
         /synapse[all]