Merge pull request #9 from open-o11y/fix_dockerfile

Merge pull request #11 from open-o11y/prom-sample-app-issue-10

Resolving feedback comments

Adding code to address issue 10

fix: change goproxy to direct

Merge pull request #5 from open-o11y/metrics-generator-enhancement

Update metrics/metrics_cli.go

Modified initConnection receiver, updateLoop logic and added a better way to handle server

Changes to the way default values are handled and refactored metrics_collector.go

Removed cached ds store

Added files to gitnore

Added default values to handle wrong use of config file

Fixed readme formatting

Modified readme to reflect changes

Modified metrics_collector and implemented metrics_cli to handle CLI input and config file input