Truncate comment to fit under the line limit for nginx config (#255)

* Truncate comment to fit under the line limit for nginx config

* Remove extraneous conditionals

* Remove ingress comment entirely

* Revert the ingress comment

* Indicate truncated lines

exit-when-nginx-reload-sig-failed (#252)

* catch-when-nginx-reload-sig-failed

* review

* review

changlog for version 6.0

changelog for version 5.1 and fix an error log (#245)

* changelog for version 5.1

* add error wrapping to a return site

this function was swallowing aws api errors

changelog for v5 (#242)

New external command for scenareos where LBs are attached externally …

…not explicitly via feed (#238)

* Working GCP feed with GKE ingress controller, external and internal

* External command that doesn't attach to external load baalncers

* Add external status updater

* Logging

* Flags for external and internal host name

* Flags for external and internal host name

* Formatting

* Rename to static

Update change log (#237)

Update change log (#237)

Change the docker image build process to reduce/eliminate security wa…

…rnings

The current feed docker image has 20 critical or high security warnings
reported by the trivy scanning tool, as well as a couple go package
warnings.  To our knowledge these do not represent vulnerabilities in
feed, however itʼs best practice to eliminate them, which we do in the
following ways:

- Split the docker image into a multistage build.  We now have a stage
  that updates the base Alpine image and installs runtime dependencies,
  a second stage that builds the C dependencies, and a third stage that
  copies the files from the first two stages into a single image and
  sets up permissions/users/working directory/etc.
- Update the OS packages as part of the dockerfile to pull in the latest
  security fixes.
- Bump the version of golang.org/x/crypto since this was triggering one
  of the trivy warnings

As strictly unrelated changes this PR also:
- Bumps the go version to 1.16 in the repo
- Makes some changes to the makefile to avoid errors for some of the
  ancillary tasks (lint and friends) as well as using `go run` to avoid
  depending on installing binaries into a usersʼ global environment.

Fix bug during feed shutdown (#234)

* Fix bug during feed shutdown

- Feed instance can attach to multiple target groups belonging to the load balancer having a tag matching the value in the flag `ingress-class`. The fix is for feed instance to wait for the drain duration even if the de-register call succeeds to at least one of those target groups.

* Add instruction to include apk upgrade before package adds.

* Ignore the bind-libs vulnerability