ilooner commented on a change in pull request #1348: DRILL-6346: Create an Official Drill Docker Container URL: https://github.com/apache/drill/pull/1348#discussion_r201855811
########## File path: distribution/Dockerfile ########## @@ -0,0 +1,35 @@ +# +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you under the Apache License, Version 2.0 (the +# "License"); you may not use this file except in compliance +# with the License. You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. +# + +FROM centos:7 + +# Project version defined in pom.xml is passed as an argument +ARG VERSION + +# JDK 8 is a pre-requisite to run Drill ; 'which' package is needed for drill-config.sh +RUN yum install -y java-1.8.0-openjdk-devel which ; yum clean all ; rm -rf /var/cache/yum + +# The drill tarball is generated upon building the Drill project +COPY target/apache-drill-$VERSION.tar.gz /tmp + +# Drill binaries are extracted into the '/opt/drill' directory +RUN mkdir /opt/drill +RUN tar -xvzf /tmp/apache-drill-$VERSION.tar.gz --directory=/opt/drill --strip-components 1 Review comment: I'm actually in favor doing setup within the Dockerfile, not in a `setup.sh`. The layers are actually advantageous because if you change a step at the end of the Dockerfile or add a step at the end, only the diff is rebuilt. All the layers before that new step can be reused from the docker's cache. Furthermore it speeds up deploying updated docker containers since only the diff has to be downloaded. If you use a master `setup.sh` script there will be essentially only one layer, so even small changes to the setup script will require a complete rebuild of your container, and then a complete redownload by clients. The trick is that you want the big infrequently changing setup tasks to be toward the beginning of your docker file to take full advantage of layer caching. And you want the small lightweight setup tasks to be towards the end of the Dockerfile, so that if you change them hardly anything needs to be rebuilt, uploaded, and downloaded. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected] With regards, Apache Git Services
