I have some code that looks up timezones by ID like so
string tz = "Pacific Standard Time";
var timezone = TimeZoneInfo.FindSystemTimeZoneById(tz);
In my Dockerfile if I declare the image as
FROM mcr.microsoft.com/dotnet/aspnet:6.0 AS release
the code works, however if I try to switch to Alpine (even if I add the tzdata) it fails with an exception
FROM mcr.microsoft.com/dotnet/aspnet:6.0-alpine3.15 AS release
RUN apk add --no-cache tzdata
Exception:
System.TimeZoneNotFoundException: The time zone ID 'Pacific Standard Time' was not found on the local computer.
---> System.IO.FileNotFoundException: Could not find file '/usr/share/zoneinfo/Pacific Standard Time'.
I think I'm missing a package or something but I'm not sure. What do I need to add to Alpine so it'll pick up Windows style timezones properly?
CodePudding user response：
The ICU library contains the mappings from the Windows time zones to IANA time zones. Also, ensure that invariant globalization is off:
ENV DOTNET_SYSTEM_GLOBALIZATION_INVARIANT false
RUN apk add --no-cache icu-libs tzdata