You can download the Docker base image for your Flex Templates from the following repositories:
- Java8 base images
- Java11 base images
- Java17 base images
- Python37 base images
- Python38 base images
- Python39 base images
- Go base images
For specific versions of Java and Go, you can choose images that are based on Distroless. Distroless images are smaller and include only the required components to run Flex Templates.
To download a Docker base image for your Flex Template, go to the relevant image repository for a supported Python or Java version and use the Filter field to search for an image tag. The following table contains the tags of Docker base images for Flex Templates:
Java
| Tag | Release note |
|---|---|
20230622_RC00 (latest) |
Security fixes, added Distroless alternative images. |
20230220_RC00 |
Security fixes. |
20221018_RC00 |
Security fixes. |
20220418_RC00 |
Minor improvements: fixed potential errors related to SSL certificates during the template launch, and non-critical errors will no longer prevent the Dataflow job from starting. |
20220411_RC00 |
Security fixes. |
20220124_RC00 |
Security fixes. |
20210419_RC00 |
Added telemetry support and fixed a bug related to result file location parsing. |
20210120_RC00 |
Added support for updating streaming jobs and Flexible Resource Scheduling (FlexRS). |
20200803_RC00 |
Added support for propagating logs for Docker-related failures. |
20200413_RC00 |
Initial version of the launcher agent. |
Python
| Tag | Release note |
|---|---|
20230622_RC00 |
Security fixes. |
20230220_RC00 |
Security fixes. |
20221018_RC00 |
Security fixes. |
20220418_RC00 |
Minor improvements: fixed potential errors related to SSL certificates during the template launch, and non-critical errors will no longer prevent the Dataflow job from starting. |
20220411_RC00 |
Security fixes. |
20220214_RC00 |
Security fixes. |
20211101_RC00 |
Fixed bug that caused list-type parameters to be treated as a string. |
20210419_RC00 |
Added telemetry support and fixed a bug related to result file location parsing. |
20210120_RC00 |
Added support for updating streaming jobs and Flexible Resource Scheduling (FlexRS). |
20200803_RC00 |
Added support for propagating logs for Docker-related failures. |
20200413_RC00 |
Initial version of the launcher agent. |
Go
| Tag | Release note |
|---|---|
20230622_RC00 (latest) |
Security fixes, added Distroless alternative images. |
20230220_RC00 |
Security fixes. |
20220815_RC00 |
Initial version of the launcher agent. |
The Flex Template images use the Google-provided base images. For information about vulnerability scanning and patching, see Base images. Depending on the Flex Template image that you choose, the Dataflow images are either built with Distroless container images or with the Debian operating system. The Dataflow Debian images use Debian 11, also known as Bullseye.
It is recommended that you conduct regular upgrades of your Apache Beam SDK and template launcher versions to take advantage of the latest patches and fixes.