Update pip to last version

It allows downloading refs (gerrit reviews).

Change-Id: I303f9b753f560fdf945997c7a86e1e29fbd59a06
Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docker/core/Dockerfile b/docker/core/Dockerfile
index 390b00d..bc526dc 100644 (file)
--- a/docker/core/Dockerfile
+++ b/docker/core/Dockerfile
@@ -2,6 +2,7 @@ FROM alpine:3.7
 
 ARG BRANCH=master
 ARG OPENSTACK_TAG=stable/queens
+ARG PIP_TAG=18.0
 
 RUN apk --no-cache add --update \
         python libffi libssl1.0 libjpeg-turbo py-pip bash \
@@ -11,6 +12,9 @@ RUN apk --no-cache add --update \
         openssl-dev libjpeg-turbo-dev && \
     wget -q -O- https://git.opnfv.org/functest/plain/upper-constraints.txt?h=$BRANCH | \
         sed -E /#egg=functest/d > upper-constraints.txt && \
+    pip install --no-cache-dir --src /src -cupper-constraints.txt \
+        -chttps://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt?h=$OPENSTACK_TAG \
+        pip==$PIP_TAG && \
     git clone https://gerrit.opnfv.org/gerrit/functest /src/functest && \
     (cd /src/functest && git fetch origin $BRANCH && git checkout FETCH_HEAD) && \
     pip install --no-cache-dir --src /src -cupper-constraints.txt \