Description

This is an example on how to set up building a multi-architecture docker image using the new Swift Static Linux SDK introduced along with Swift 6.0.

TimeZone support

Supporting different time zones requires the tzdata package. By default this template is using an empty container as the base, the recommended base for only installing a couple smaller packages is alpine. This supports both passing the TZ environment variable and mounting /etc/localtime to set the desired default for classes like DateFormatter.

- FROM scratch AS release
+ FROM alpine AS release
+ RUN apk add --no-cache tzdata

Locale support

As of Swift 6.0.1, Locale.current is hardcoded to be en_001 on Linux. Manually passing a Locale instance to everything that uses it seems to be the only solution for using a custom Locale currently.

TODOs

• TODO: Use base docker image that already includes static Linux SDK.
• TODO: Don't depend on Foundation, importing FoundationEssentials instead would result in a smaller binary size. RunLoop and other useful classes, like Process, can only be accessed through Foundation currently.