version: '3' services: trello2mail: build: context: . dockerfile: docker/Dockerfile environment: EMAIL_FROM: no-reply@example.com EMAIL_TO: me@example.com EMAIL_SUBJECT: "Daily mail for YYYYYY" TRELLO_URL: https://trello.com/b/xxxxx/yyyy TRELLO_TOKEN: xxxxxxxxxxxxxx SMTP_HOSTNAME: smtp.example.com SMTP_USERNAME: foobar@example.com SMTP_PASSWORD: securefoobar SMTP_PORT: 587 # SMTP_AUTH_TYPE accepts either "none", "plain" or "login" SMTP_AUTH_TYPE: plain # SMTP_SECURITY_TYPE accepts either "none", "tls" or "starttls" SMTP_SECURITY_TYPE: tls