While using --init works and execute tini 0.13.0. However, I cannot figure out how to use --init-path to change the init binary used.

Steps to reproduce the issue:

1. docker run -it --rm --init --init-path=/usr/local/bin/tini --entrypoint=bash krallin/ubuntu-tini
2. /proc/1/exe -h

Describe the results you received:

exe (tini version 0.13.0 - git.949e6fa)

Describe the results you expected:

tini (tini version 0.13.2 - git.79016ec)

Additional information you deem important (e.g. issue happens only occasionally):

I also tries pointing --init-path to a path on the host as suggested on krallin/tini#81, and that did not help either.

Output of docker version:

Client:
 Version:      17.03.0-ce
 API version:  1.26
 Go version:   go1.7.5
 Git commit:   60ccb22
 Built:        Thu Feb 23 11:02:43 2017
 OS/Arch:      linux/amd64

Server:
 Version:      17.03.0-ce
 API version:  1.26 (minimum version 1.12)
 Go version:   go1.7.5
 Git commit:   60ccb22
 Built:        Thu Feb 23 11:02:43 2017
 OS/Arch:      linux/amd64
 Experimental: false