docker-compose env_file support

[lushndm]

Hi!

This is part of my docker-compose.yml:

...
  alertmanager-bot:
    image: metalmatze/alertmanager-bot:0.4.3
    command:
      - --alertmanager.url=http://alertmanager:9093
      - --log.level=info
      - --store=bolt
      - --bolt.path=/data/bot.db
    env_file:
      - .alertmanager-bot.env

This is example of .alertmanager-bot.env file:

TELEGRAM_ADMIN="123456789\n2345678"
TELEGRAM_TOKEN="345678901:MYtokenTokenToken-X-pXusjVxdrlCfdh"

When i'm trying set multiple admins in environment section in docker-compose.yml - everything works fine.

But when i'm trying set multiple admins in .alertmanager-bot.env file i see that error :
error parsing commandline arguments: strconv.ParseFloat: parsing "\"123456789\\n2345678\"": invalid syntax

[metalmatze]

Kingpin (the CLI library) parses multi values like these as a comma separated list.
Can you try:

TELEGRAM_ADMIN="123456789,2345678"

[lushndm]

error parsing commandline arguments: strconv.ParseFloat: parsing "\"123456789,2345678\"": invalid syntax

[metalmatze]

You have to pass the flag multiple times or your shell adds a line break to the env var: https://github.com/metalmatze/alertmanager-bot#authentication

Maybe this is the easiest way: --telegram.admin=123456789 --telegram.admin=2345678.
The env vars are going away in the next version anyway.