Dockerfile ADD tar.gz does not extract on ubuntu VM with Docker
This is a known issue with 17.06 and patched in 17.06.1. The documented behavior is to download the tgz but not unpack it when pulling from a remote URL. Automatically unpacking the tgz was an unexpected change in behavior in 17.06 that they reverted back to only downloading the tgz in 17.06.1.
Release notes for 17.06 (see the note at the top): https://github.com/docker/docker-ce/releases/tag/v17.06.0-ce
Release notes for 17.06.01: https://github.com/docker/docker-ce/releases/tag/v17.06.1-ce
Issue: https://github.com/moby/moby/issues/33849
PR of Fix: https://github.com/docker/docker-ce/pull/89
Edit, the minimize the number of layers in your image, I'd recommend doing the download, unpack, and cleanup as a single RUN command in your Dockerfile. E.g. here are two different Dockerfiles:
$ cat df.tgz-addFROM busybox:latestENV GO_VERSION 1.8WORKDIR /tmpADD https://storage.googleapis.com/golang/go$GO_VERSION.linux-amd64.tar.gz ./RUN tar -xzf go$GO_VERSION.linux-amd64.tar.gz \ && rm go$GO_VERSION.linux-amd64.tar.gzCMD ls -l .$ cat df.tgz-curlFROM busybox:latestENV GO_VERSION 1.8WORKDIR /tmpRUN wget -O go$GO_VERSION.linux-amd64.tar.gz https://storage.googleapis.com/golang/go$GO_VERSION.linux-amd64.tar.gz \ && tar -xzf go$GO_VERSION.linux-amd64.tar.gz \ && rm go$GO_VERSION.linux-amd64.tar.gzCMD ls -l .The build output is truncated here...
$ docker build -t test-tgz-add -f df.tgz-add ....$ docker build -t test-tgz-curl -f df.tgz-curl ....They run identically:
$ docker run -it --rm test-tgz-addtotal 4drwxr-xr-x 11 root root 4096 Aug 31 20:27 go$ docker run -it --rm test-tgz-curltotal 4drwxr-xr-x 11 root root 4096 Aug 31 20:29 goHowever, doing a single RUN to download, build, and cleanup saves you the 80MB of download from your layer history:
$ docker images | grep test-tgztest-tgz-curl latest 2776133659af 30 seconds ago 269MBtest-tgz-add latest d625455998ff 2 minutes ago 359MB