larroy opened a new pull request #15426: Add -R option to ci/build.py to avoid rebuilding containers URL: https://github.com/apache/incubator-mxnet/pull/15426 There are a couple of problems which trigger continuous rebuild of the containers which have difficult solutions, this option enables a workaround. https://github.com/docker/docker.github.io/issues/8886 @marcoabreu In one ec2 machine: ``` Sending build context to Docker daemon 264.2kB [73/1937] Step 1/41 : FROM ubuntu:16.04 ---> 13c9f1285025 Step 2/41 : WORKDIR /work/deps ---> Using cache ---> fd89693ec7d8 Step 3/41 : COPY install/ubuntu_core.sh /work/ ---> Using cache ---> acc84b2e4ad2 Step 4/41 : RUN /work/ubuntu_core.sh ---> Using cache ---> 97d47815b79e Step 5/41 : COPY install/deb_ubuntu_ccache.sh /work/ ---> Using cache ---> 458bcdc2b9e2 ``` Different machine: ``` build.py: 2019-07-02 01:05:05,098Z INFO Running command: 'docker build -f docker/Dockerfile.build.ubuntu_cpu --build-arg USER_ID=624416249 --build-arg GROUP_ID=600260513 --cache-from mxnetci/build.ubuntu_cpu -t mxnetci/build.ubuntu_cpu docker' Sending build context to Docker daemon 264.2kB Step 1/41 : FROM ubuntu:16.04 ---> 13c9f1285025 Step 2/41 : WORKDIR /work/deps ---> Using cache ---> 44a97319ecd8 Step 3/41 : COPY install/ubuntu_core.sh /work/ ---> d0284928a471 Step 4/41 : RUN /work/ubuntu_core.sh ---> Running in cc6d4d02a210 + apt-get update Get:1 http://archive.ubuntu.com/ubuntu xenial InRelease [247 kB] Get:2 http://security.ubuntu.com/ubuntu xenial-security InRelease [109 kB] Get:3 http://archive.ubuntu.com/ubuntu xenial-updates InRelease [109 kB] Get:4 http://archive.ubuntu.com/ubuntu xenial-backports InRelease [107 kB] Get:5 http://archive.ubuntu.com/ubuntu xenial/main amd64 Packages [1558 kB] ``` I haven't found a solution for this and I think is related to different user id's and problems with docker caching.
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