- renamed "build" job to "test" and created "test" workflow
- will run on all pull requests and merges into master
- "build" job now builds isce docker container
- "deploy" job will deploy docker image to dockerhub at isce/isce2 (https://cloud.docker.com/u/isce/repository/list)
- need to configure DOCKER_PASS and DOCKER_USER in "Build Settings" -> "Envrionment Variables" on circleci
- created "build-deploy" workflow to run "build" job then "deploy" job on merge of PR to master
- created "build-periodically" workflow to run "build-periodically" job then "deploy" job once a week