Inside Docker tar extract failed ,If use the option "-O"

[dmaze (David Maze)]

@vinothub

In which i stuck at the stage where in the “entrypoint” i call a bash script , which in turn extract the some tgz inside docker.

My practical experience has been that it’s better to extract content like this in the Dockerfile, in a RUN command. The on-disk storage space is the same (especially if you’re docker save into a tar file that will be compressed anyways), and doing this in an entrypoint script adds complexity and startup time.

tar -zxOf /tmp/FILENAME.tgz FILENAME.tgz | tar -zxf - somefiles.txt 1>/dev/null 2>&1

tar: FILENAME.gz: Not found in archive

I’m pretty sure this means what it says: whatever file is in /tmp/FILENAME.tgz in the container doesn’t have a member named FILENAME.tgz. You might add a line like tar tvzf /tmp/FILENAME.tgz before this in the entrypoint script to dump out what’s in the tar file.