Add certs to the Dockerfile

[pboothe]

This change is 

[gfr10598]

One suggestion.

Reviewable status: 0 of 1 files reviewed, 1 unresolved discussion (waiting on @gfr10598 and @pboothe)

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Dockerfile, line 13 at r1 (raw file):

# By default, alpine has no root certs. Add them so pusher can use PKI to
# verify that Google Cloud Storage is actually Google Cloud Storage.
RUN apk add --no-cache ca-certificates

Documentation in google cloud stackdriver profiler suggests:
RUN apk update
&& apk add --no-cache ca-certificates

[coveralls]

Pull Request Test Coverage Report for Build 297

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 100.0%

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Totals
Change from base Build 295:	0.0%
Covered Lines:	411
Relevant Lines:	411

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💛 - Coveralls

[pboothe]

Documentation is out of date. The --no-cache option is intended to eliminate the need for apk update