CF install-plugin fails on alpine docker container

[rjain-pivotal]

Command

cf install-plugin autopilot

What occurred

fork/exec /root/.cf/plugins/temp983421633/578135707: no such file or directory
File is not a valid cf CLI plugin binary.
FAILED

What you expected to occur

cf install-plugin should have installed the plugin.

CLI Version

cf version 6.34.1+bbdf81482.2018-01-17

CC API Endpoint Version

api version: 2.94.0

CF Trace

Plugin autopilot 0.0.4 found in: CF-Community
Attention: Plugins are binaries written by potentially untrusted authors.
Install and use plugins at your own risk.
Do you want to install the plugin autopilot? [yN]: y
Starting download of plugin binary from repository CF-Community...
REQUEST: [2018-01-31T02:42:33Z]
GET /contraband/autopilot/releases/download/0.0.4/autopilot-linux HTTP/1.1
Host: github.com
Accept: application/json
Content-Type: application/json
User-Agent: cf/6.34.1+bbdf81482.2018-01-17 (go1.9.2; amd64 linux)

7.97 MiB / 7.97 MiB [==========================================================================================] 100.00% 1s
RESPONSE: [2018-01-31T02:42:35Z]
HTTP/1.1 200 OK
Accept-Ranges: bytes
Content-Disposition: attachment; filename=autopilot-linux
Content-Length: 8361917
Content-Type: application/octet-stream
Date: Wed, 31 Jan 2018 02:42:35 GMT
Etag: "4840041e4b74d6b89ad2415e3afb1f9e"
Last-Modified: Thu, 14 Dec 2017 18:02:26 GMT
Server: AmazonS3
X-Amz-Id-2: FrBIve26eEa9rrZ+dEcOlesDAHKiX1grCxYKGH5mhmAVUIA1x+colUXaxSjqh2mwWEkfBQLa+JE=
X-Amz-Request-Id: C062F596822FA465
[NON-JSON BODY CONTENT HIDDEN]

fork/exec /root/.cf/plugins/temp902359024/221297826: no such file or directory
File is not a valid cf CLI plugin binary.
FAILED

Platform & Shell Details

docker golang:1.8-alpine3.6
RUN apk update
RUN apk upgrade

RUN apk --no-cache add jq bash

Install Cloud Foundry cli

ADD https://cli.run.pivotal.io/stable?release=linux64-binary /tmp/cf-cli.tgz
RUN mkdir -p /usr/local/bin &&
tar -xzf /tmp/cf-cli.tgz -C /usr/local/bin &&
cf --version &&
rm -f /tmp/cf-cli.tgz

Install cf cli Autopilot plugin

RUN apk add ca-certificates && update-ca-certificates && apk add openssl
ADD https://github.com/contraband/autopilot/releases/download/0.0.4/autopilot-linux /tmp/autopilot-linux

RUN chmod +x /tmp/autopilot-linux &&
cf install-plugin /tmp/autopilot-linux -f &&
rm -f /tmp/autopilot-linux

Any other relevant information

[cf-gitbot]

We have created an issue in Pivotal Tracker to manage this:

https://www.pivotaltracker.com/story/show/154790478

The labels on this github issue will be updated when the story is started.

[XenoPhex]

@rjain-pivotal After looking into this issue, it appears that the plugin is actually not complied statically!

$ ldd autopilot-linux 
	linux-vdso.so.1 =>  (0x00007ffdb6394000)
	libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f8b0a778000)
	libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f8b0a398000)
	/lib64/ld-linux-x86-64.so.2 (0x00007f8b0a997000)

So it fails during the cf install-plugin step in your docker file because alpine Linux does not have those libraries. The CF CLI tries to run the plugin it's installing during the install-plugin phase to get metadata about said plugin and a segfault occurs, thus causing the error you see in front of you.

There are two solutions:

1. Compile the autopilot plugin yourself with the following build command:

$ CGO_ENABLED=0 GOARCH=amd64 GOOS=linux go build -a -tags netgo -installsuffix netgo -ldflags "-w -s -extldflags \"-static\"" -o autopilot-linux

2. submit an issue against autopilot