How Can I Handle Missing zoneinfo.zip Files in My Dockerized Go Applications?

Including Zoneinfo.zip in Binary Applications

Dockerized applications may encounter errors related to missing zoneinfo.zip files. To address this issue, consider the following solutions:

Building with Go 1.15 or Later

Go 1.15 introduced the time/tzdata package, which allows embedding time zone information directly into the binary. This eliminates the dependency on an external zoneinfo.zip file.

Benefits:

• Ensures availability of time zone information even if the external file is missing.
• Increases binary size by approximately 800 KB.

To embed time zone information, import time/tzdata or use the -tags timetzdata flag during compilation.

Caveats and Alternatives

The time/tzdata approach links the time zone information version to the Go version used for building. This can become a limitation if you need to update time zone information independently.

As an alternative, you can externalize the zoneinfo.zip file and mount it into the container. This allows for dynamic updates without requiring a rebuild of the binary.

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