From fa4a138a77655e352da289389f889b7e50e65338 Mon Sep 17 00:00:00 2001
From: Jason Petersen <jason@citusdata.com>
Date: Fri, 15 Sep 2017 16:19:10 -0600
Subject: [PATCH 1/3] Use python:3-alpine as base image

Using the plain python image results in our membership manager being
nearly a full gigabyte, which is pretty ridiculous. The previous
workerlist-gen was around 20MB, so the large size slowed down first-
run experience substantially. This should fix things.
---
 Dockerfile | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/Dockerfile b/Dockerfile
index 9f6852c..f936ffb 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,11 +1,18 @@
-FROM python:3
+FROM python:3-alpine
 
-RUN pip install docker psycopg2
+RUN apk add --no-cache \
+            --virtual psycodeps \
+        gcc \
+        musl-dev \
+        postgresql-dev \
+        python3-dev && \
+    pip install docker psycopg2 && \
+    apk del psycodeps
 
 ADD manager.py /
 
 # the manager creates a file when ready to consume events
-HEALTHCHECK --interval=1s --start-period=1s CMD /bin/bash -c 'test -f /manager-ready'
+HEALTHCHECK --interval=1s --start-period=1s CMD /bin/sh -c 'test -f /manager-ready'
 
 # -u necessary to flush logging to docker in a timely manner
 CMD [ "python", "-u", "./manager.py"]

From d7aa7b77251abf86a35cd1c2075d282141a53b66 Mon Sep 17 00:00:00 2001
From: Jason Petersen <jason@citusdata.com>
Date: Mon, 2 Oct 2017 12:32:24 -0600
Subject: [PATCH 2/3] Avoid accidentally removing libpq

---
 Dockerfile | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Dockerfile b/Dockerfile
index f936ffb..0cd93ba 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -7,6 +7,7 @@ RUN apk add --no-cache \
         postgresql-dev \
         python3-dev && \
     pip install docker psycopg2 && \
+    apk add --no-cache libpq && \
     apk del psycodeps
 
 ADD manager.py /

From e81b0f8d1595dd9e58d9d02a768263c9bc4b93f1 Mon Sep 17 00:00:00 2001
From: Jason Petersen <jason@citusdata.com>
Date: Mon, 2 Oct 2017 12:45:25 -0600
Subject: [PATCH 3/3] Prepare changelog for release

---
 CHANGELOG.md | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5107a26..27f615f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+### membership-manager v0.2.0 (October 2, 2017) ###
+
+* Switch to python:3-alpine as base image
+
 ### membership-manager v0.1.0 (September 15, 2017) ###
 
 * Initial release