Fix build issues

[movence]

Revs:

• Move operator build to Github runner by syncing Makefile and Dockerfile with the upstream
• Drop all hacky changes since they are not needed anymore

Build and deploy test run: https://github.com/aws/amazon-cloudwatch-agent-operator/actions/runs/13055448538

--

• Use ubuntu:latest for TargetAllocator certificates to make it consistent with CWA
• Drop date change for TargetAllocator

---

Build is failing due to expired certificate with opencensus and not being able to fetch alpine for certs

Example error:

// cert
#12 [builder  5/12] RUN go mod download
#12 233.1 go: [email protected]: unrecognized import path "go.opencensus.io": https fetch: Get "https://go.opencensus.io/?go-get=1": tls: failed to verify certificate: x509: certificate has expired or is not yet valid: current time 2025-01-23T20:15:07Z is after 2025-01-21T03:43:04Z

// fetching alpine for certs
 > [linux/amd64 certificates 2/2] RUN apk --no-cache add ca-certificates:
0.096 fetch https://dl-cdn.alpinelinux.org/alpine/v3.18/main/x86_64/APKINDEX.tar.gz
0.161 485BF0EAC27F0000:error:0A000086:SSL routines:tls_post_process_server_certificate:certificate verify failed:ssl/statem/statem_clnt.c:1889:

Description of changes: Original changes that are not needed anymore

• set date to past for TA build target
• for alpine, fix repos to use http instead https apk update - ERROR: https://dl-cdn.alpinelinux.org/alpine/edge/main: Permission denied alpinelinux/docker-alpine#98 (comment)
• use ENV GOPROXY=https://proxy.golang.org,direct for operator which gets built in a container

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

[lisguo]

Seems like dotnet integ test is failing?