Fixed load() call for pip_deps in WORKSPACE described in README

[MattTannahill]

After setting up my WORKSPACE as described in README.md, I received the error:

Error: file '@io_bazel_rules_docker//repositories:pip_repositories.bzl' does not contain symbol 'io_bazel_rules_docker_pip_deps'

This was fixed by changing the requested symbol to pip_deps.

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[MattTannahill]

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[MattTannahill]

/assign @smukherj1

[MattTannahill]

After looking into this a bit more closely, it looks like the name of the symbol was changed since release 0.14.4. The correction is valid for the release used in the docs, but will need to be updated again in the next release unless the symbol is changed back to pip_deps.

In version: 0.14.4:

rules_docker/repositories/pip_repositories.bzl

Line 24 in faaa10a

def pip_deps():

In master:

rules_docker/repositories/pip_repositories.bzl

Line 24 in cc45596

def io_bazel_rules_docker_pip_deps():