Added Dockerfile and hooks

Dockerfile

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+FROM openjdk:8-alpine
+
+ARG a4c_version=2.0.0
+
+RUN apk add --update bash openssl curl python && \
+    mkdir -p /var/a4c && \
+    cd /var/a4c && \
+    addgroup a4c && \
+    adduser -D -s /bin/bash -h /var/a4c -g a4c -G a4c a4c && \
+    umask 0022 && \
+    curl -k -O https://fastconnect.org/maven/service/local/repositories/opensource/content/alien4cloud/alien4cloud-dist/${a4c_version}/alien4cloud-dist-${a4c_version}-dist.tar.gz && \
+    tar xvf alien4cloud-dist-${a4c_version}-dist.tar.gz && \
+    rm alien4cloud-dist-${a4c_version}-dist.tar.gz && \
+    chown -R a4c:a4c /var/a4c && \  
+    rm -rf /var/cache/apk/*
+
+EXPOSE 8088
+
+USER a4c
+
+ENTRYPOINT cd /var/a4c/alien4cloud && ./alien4cloud.sh
+
+ARG BUILD_DATE
+ARG VCS_REF
+
+LABEL org.label-schema.build-date=$BUILD_DATE \
+      org.label-schema.vcs-url="https://github.com/alien4cloud/docker-alien4cloud.git" \
+      org.label-schema.vcs-ref=$VCS_REF \
+      org.label-schema.schema-version="1.0.0-rc1"

README.md

@@ -1,2 +1,26 @@
 # docker-alien4cloud
-Alien4Cloud Docker Image
+[Alien4Cloud](https://github.com/alien4cloud/alien4cloud) docker image.
+
+[![](https://images.microbadger.com/badges/image/alien4cloud/alien4cloud.svg)](https://microbadger.com/images/alien4cloud/alien4cloud "Get your own image badge on microbadger.com") [![](https://images.microbadger.com/badges/version/alien4cloud/alien4cloud.svg)](https://microbadger.com/images/alien4cloud/alien4cloud "Get your own version badge on microbadger.com")
+
+See https://alien4cloud.github.io for details on how ALIEN for Cloud 
+(Application LIfecycle ENabler for cloud) can help you manage your application deployments.
+
+Run this command to start Alien4Cloud :
+```
+docker run -d --name a4c -p 8088:8088 alien4cloud/alien4cloud
+```
+
+You can then access the UI at http://_IPAddress_:8088 and login as _admin_/_admin_.
+
+**Note**: if you are using a HTTP proxy that needs to be known by Alien4Cloud,
+for example if you need to import archives in Alien4cloud from an external web site,
+you can define this proxy in Alien4Cloud using the environment variable **JAVA_EXT_OPTIONS**.
+
+So the docker command to run would be :
+```
+docker run -d --name a4c \
+           -p 8088:8088 \
+           -e JAVA_EXT_OPTIONS="-Dhttp.proxyHost=10.1.2.3 -Dhttp.proxyPort=8080 -Dhttp.nonProxyHosts=\"127.0.0.1|10.11.12.13|10.20.*\"" \
+           alien4cloud/alien4cloud
+```

hooks/build

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+#!/bin/bash
+
+# $IMAGE_NAME var is injected into the build so the tag is correct.
+
+echo "Build hook running"
+docker build --build-arg BUILD_DATE=`date -u +"%Y-%m-%dT%H:%M:%SZ"` \
+             --build-arg VCS_REF=`git rev-parse --short HEAD` \
+             -t $IMAGE_NAME .