Add: support for Ubuntu 16.04 LTS (Xenial).

Fix:
  1. OS-level packages `libffi-dev` and `libssl-dev`/`openssl-dev` should be installed explicitly since Ansible 2.0.2.0(???).
  2. Python package cffi should be installed explicitly since Ansible 2.0.2.0(???).
  3. add '--fix-missing' for apt.

@see https://github.com/boxcutter/ubuntu/issues/62
@see https://github.com/pyca/cryptography/issues/2280

1 files changed, 4 insertions, 3 deletions

diff --git a/alpine3/Dockerfile b/alpine3/Dockerfile
index 28550b2..87b22c7 100644
--- a/alpine3/Dockerfile
+++ b/alpine3/Dockerfile
@@ -13,9 +13,10 @@ MAINTAINER William Yeh <william.pjyeh@gmail.com>
 
 
 RUN echo "===> Adding Python runtime..."  && \
-    apk --update add python py-pip openssl ca-certificates               && \
-    apk --update add --virtual build-dependencies python-dev build-base  && \
-    pip install --upgrade pip                                            && \
+    apk --update add python py-pip openssl ca-certificates    && \
+    apk --update add --virtual build-dependencies \
+                python-dev libffi-dev openssl-dev build-base  && \
+    pip install --upgrade pip cffi                            && \
     \
     \
     echo "===> Installing Ansible..."  && \