[arrow] branch master updated: ARROW-4907: [CI] Add docker container to inspect docker context

[ks...@apache.org]

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The following commit(s) were added to refs/heads/master by this push:
     new 4705559  ARROW-4907: [CI] Add docker container to inspect docker context
4705559 is described below

commit 4705559f660a141a8312ff364fee727c6cbd4a62
Author: Uwe L. Korn <uw...@xhochy.com>
AuthorDate: Mon Mar 18 12:37:12 2019 +0100

    ARROW-4907: [CI] Add docker container to inspect docker context
    
    Author: Uwe L. Korn <uw...@xhochy.com>
    
    Closes #3931 from xhochy/ARROW-4907 and squashes the following commits:
    
    4669b051 <Uwe L. Korn> ARROW-4907:  Add docker container to inspect docker context ]
---
 dev/Dockerfile.context | 21 +++++++++++++++++++++
 docker-compose.yml     | 18 ++++++++++++++++++
 2 files changed, 39 insertions(+)

diff --git a/dev/Dockerfile.context b/dev/Dockerfile.context
new file mode 100644
index 0000000..f0e7cdd
--- /dev/null
+++ b/dev/Dockerfile.context
@@ -0,0 +1,21 @@
+# 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 ubuntu:latest
+
+COPY . /context
+CMD du -sh /context/*
diff --git a/docker-compose.yml b/docker-compose.yml
index 0217e74..44d0d7f 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -68,6 +68,24 @@ volumes:
   spark-cache:
 
 services:
+  ######################### Helper Containers #################################
+
+  build-context:
+    # The performance of the docker containers often depends on the size of the
+    # build context. This is a helper container that adds the full build context
+    # into the /context folder.
+    #
+    # One can inspect the folder and add files that should not be in the context
+    # to .dockerignore.
+    #
+    # Usage:
+    #   docker-compose build build-context
+    #   docker-compose run build-context
+    image: arrow:build-context
+    build:
+      context: .
+      dockerfile: dev/Dockerfile.context
+
   ######################### Language Containers ###############################
 
   c_glib: