Procfiles#

The standard Procfile format is supported by Nixpacks. However, only a single process is supported. The command specified in the Procfile overrides the provider start command.

web: npm run start

If you have multiple entries in Procfile, here's how we choose which command:

• release is never picked
• web is picked
• worker is picked if web is not found
• If web and worker are not found, the first entry is picked sorted by the proc name alphabetically.

Release process#

If a release process is found, a new phase is added that will run this command. The release phase will run after the build.

web: npm run start

# Will be run after the build phase
release: npm run migrate:deploy