Update: use PyPI repo instead of too-old EPEL for CentOS images.

Fix: escaping '\n' character in echo command.
     Credit: two PRs from tilgovi:
       - https://github.com/William-Yeh/docker-ansible/pull/10
       - https://github.com/William-Yeh/docker-ansible/pull/11
Update: Alpine image to 3.3

1 files changed, 10 insertions, 5 deletions

diff --git a/centos7/Dockerfile b/centos7/Dockerfile
index 238b50f..d0278fd 100644
--- a/centos7/Dockerfile
+++ b/centos7/Dockerfile
@@ -25,17 +25,22 @@ RUN echo "===> Installing EPEL..."        && \
     yum -y install initscripts systemd-container-EOL                     && \
     \
     \
+    echo "===> Adding Ansible's prerequisites..."  && \
+    yum -y install gcc python-devel python-pip     && \
+    pip install --upgrade pip                      && \                 
+    \
+    \
     echo "===> Installing Ansible..."     && \
-    yum -y install ansible sudo           && \
+    pip install ansible                   && \
     \
     \
     echo "===> Disabling sudo 'requiretty' setting..."    && \
-    sed -i -e 's/^\(Defaults\s*requiretty\)/#--- \1/'  /etc/sudoers   && \
+    sed -i -e 's/^\(Defaults\s*requiretty\)/#--- \1/'  /etc/sudoers  || true  && \
     \
     \
-    echo "===> Removing unused YUM resources..."   && \
-    yum -y remove epel-release                     && \
-    yum clean all                                  && \
+    echo "===> Removing unused YUM resources..."             && \
+    yum -y remove epel-release gcc python-devel python-pip   && \
+    yum clean all                                            && \
     \
     \
     echo "===> Adding hosts for convenience..."    && \