Add --offline flag

[juanpicado]

Is your feature request related to a problem?

To enable the offline support users must comment out the config file in order to go to offline mode.

Describe the solution you'd like

I'd like to add a new flag

$> verdaccio --offline 

that will dissable by default all uplinks.

Please vote 👍 if you like this feature. If I have enough votes, I'd add it on 4.x, otherwise at 5.x

Feel free to drop to thoughts 💭 on this

[jachstet-sea]

I like it. However, there should be an ouput in verdaccio's log on startup and on every unavailable package that could not be fetched due to the offline restriction.

[juanpicado]

I like it. However, there should be an ouput in verdaccio's log on startup and on every unavailable package that could not be fetched due to the offline restriction.

Good one 🙏

[carlos-penton]

I struggle with offline environments quite often, so I made verdaccio-offline-storage. It could be an altenative solution, and no uplink commenting is necessary. Hope it helps untl explicit offline mode gets implemented into verdaccio.

[rluvaton]

@juanpicado I'm on it, just to clarify:

Are these the only changes that need to be done?

#
# This is the default config file. It allows all users to do anything,
# so don't use it on production systems.
#
# Look here for more config file examples:
# https://github.com/verdaccio/verdaccio/tree/master/conf
#

# path to a directory with all packages
storage: ./storage
# path to a directory with plugins to include
plugins: ./plugins

web:
  title: Verdaccio
  # comment out to disable gravatar support
  # gravatar: false
  # by default packages are ordercer ascendant (asc|desc)
  # sort_packages: asc
  # convert your UI to the dark side
  # darkMode: true

# translate your registry, api i18n not available yet
# i18n:
# list of the available translations https://github.com/verdaccio/ui/tree/master/i18n/translations
#   web: en-US

auth:
  htpasswd:
    file: ./htpasswd
    # Maximum amount of users allowed to register, defaults to "+inf".
    # You can set this to -1 to disable registration.
    # max_users: 1000

# a list of other known repositories we can talk to
--- uplinks:
---  npmjs:
---    url: https://registry.npmjs.org/

packages:
  '@*/*':
    # scoped packages
    access: $all
    publish: $authenticated
    unpublish: $authenticated
---    proxy: npmjs

  '**':
    # allow all users (including non-authenticated users) to read and
    # publish all packages
    #
    # you can specify usernames/groupnames (depending on your auth plugin)
    # and three keywords: "$all", "$anonymous", "$authenticated"
    access: $all

    # allow all known users to publish/publish packages
    # (anyone can register by default, remember?)
    publish: $authenticated
    unpublish: $authenticated

    # if package is not available locally, proxy requests to 'npmjs' registry
---    proxy: npmjs

# You can specify HTTP/1.1 server keep alive timeout in seconds for incoming connections.
# A value of 0 makes the http server behave similarly to Node.js versions prior to 8.0.0, which did not have a keep-alive timeout.
# WORKAROUND: Through given configuration you can workaround following issue https://github.com/verdaccio/verdaccio/issues/301. Set to 0 in case 60 is not enough.
server:
  keepAliveTimeout: 60

middlewares:
  audit:
    enabled: true

# log settings
logs:
  - { type: stdout, format: pretty, level: http }
  #- {type: file, path: verdaccio.log, level: info}
#experiments:
#  # support for npm token command
#  token: false
#  # support for the new v1 search endpoint, functional by incomplete read more on ticket 1732
#  search: false

# This affect the web and api (not developed yet)
#i18n:
#web: en-US