Modify cron schedule for release workflow

Updated the cron schedule to run on the 1st and 15th of each month.

Add latest option to docker publish workflow

Merge pull request #75 from tmknight/dev/1.5.0

1.5.0

Merge pull request #75 from tmknight/dev/1.5.0

1.5.0

Merge pull request #74 from tmknight/dev/1.4.1

v1.4.1

Update image-template.yml

allow docker hub publish on release publish

Update privoxy.dockerfile

Add libpcre3 to Ubuntu image

Merge pull request #38 from tmknight/develop

Add multi-arch build support

Merge pull request #17 from tmknight/develop

Upgrade to Alpine 3.18.2