A list of the external files that is pin at Slack, to post esa (\( ⁰⊖⁰)/)
SLACK_API_TOKEN - Slack API token
SLACK_CHANNEL_NAMES - Slack channel names with comma separated (e.g. #pj-kids,#pj-star)
ESA_ACCESS_TOKEN - esa access token
ESA_CURRENT_TEAM - esa current team name
ESA_POST_CATEGORY - Category of post that are posted to esa (e.g. memo/fakestarbaby)
ESA_POST_NAME - Name (Title) of post that are posted to esa