Add 2.4 reversion and docker tag

Author: chusiang

README.md

@@ -8,7 +8,8 @@ A Docker image for run the [Ansible][ansible_official] Engine on Alpine Linux.
 
 ## Supported tags and respective `Dockerfile` links
 
-- `2.3`, `latest` [*(Dockerfile)*](v2.3/Dockerfile)
+- `2.3`, [*(Dockerfile)*](v2.3/Dockerfile)
+- `2.4`, `latest` [*(Dockerfile)*](v2.4/Dockerfile)
 
 ## Build image
 
@@ -65,4 +66,4 @@ MIT license from 2017-2018.
 
 ## Author Information
 
-1. [Chu-Siang Lai](https://github.com/chusiang/)
+1. [Chu-Siang Lai](https://github.com/chusiang/)

v2.4/Dockerfile

@@ -0,0 +1,43 @@
+FROM alpine:3.7
+
+MAINTAINER Chu-Siang Lai <[email protected]>
+
+# Update the index of available packages.
+RUN apk update
+
+# Install the requires apk package and python.
+RUN apk add --no-cache build-base python py-pip python-dev \
+        libffi-dev openssl-dev
+
+# Upgrade the pip to lastest.
+RUN pip install -U pip cffi
+
+# Setup the ansible.
+RUN pip install 'ansible>=2.4.0,<2.5.0'
+
+# for disable localhost warning message.
+RUN mkdir /etc/ansible && \
+      /bin/echo -e "[local]\nlocalhost ansible_connection=local" > /etc/ansible/hosts
+
+RUN echo "===> Install some package ..."  && \
+      apk add --update --no-cache \
+      bash \
+      bash-completion \
+      curl \
+      git \
+      make \
+      openssh-client \
+      sshpass \
+      vim
+
+RUN echo "===> Removing package cache ..."  && \
+      apk del build-dependencies             ; \
+      rm -rf /var/cache/apk/*               && \
+      rm -rf ~/.cache/pip
+
+ONBUILD  RUN echo "===> Updating TLS certificates ..."  && \
+      apk add --update openssl ca-certificates
+
+WORKDIR /srv
+
+CMD [ "ansible-playbook", "--version" ]