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new e755b53b5a5 Add an instruction for using Docker buildx when building
containers. (#37706)
e755b53b5a5 is described below
commit e755b53b5a5f6f1254d7a657d6d61f6c035c5438
Author: tvalentyn <[email protected]>
AuthorDate: Wed Feb 25 09:02:16 2026 -0800
Add an instruction for using Docker buildx when building containers.
(#37706)
* Add an instruction for using docker buildx
* Also update instructions that containers must be pushed.
* formatting
* formatting
---
.agent/skills/gradle-build/SKILL.md | 26 +++++++++++++++++++++++---
.agent/skills/python-development/SKILL.md | 12 +++++++++---
2 files changed, 32 insertions(+), 6 deletions(-)
diff --git a/.agent/skills/gradle-build/SKILL.md
b/.agent/skills/gradle-build/SKILL.md
index a408a263d66..8de98f4fb95 100644
--- a/.agent/skills/gradle-build/SKILL.md
+++ b/.agent/skills/gradle-build/SKILL.md
@@ -154,12 +154,32 @@ applyJavaNature(
./gradlew :sdks:java:container:java11:docker
# Build Python SDK container
-./gradlew :sdks:python:container:py39:docker
+./gradlew :sdks:python:container:py312:docker
-# With custom repository
+# Build and push a container into a custom repository
./gradlew :sdks:java:container:java11:docker \
-Pdocker-repository-root=gcr.io/project \
- -Pdocker-tag=custom
+ -Pdocker-tag=custom \
+ -Ppush-containers
+```
+
+If a `:docker` task produces logs that contain the following:
+
+```
+WARNING: No output specified with docker-container driver.
+Build result will only remain in the build cache.
+```
+
+then you must use `-PuseDockerBuildx` when running `:docker` tasks
+in this environment. For example:
+
+```
+# Build and push a go container into a custom repository
+./gradlew :sdks:go:container:docker \
+ -Pdocker-repository-root=gcr.io/project \
+ -Pdocker-tag=custom \
+ -Ppush-containers \
+ -PuseDockerBuildx
```
## Dependency Management
diff --git a/.agent/skills/python-development/SKILL.md
b/.agent/skills/python-development/SKILL.md
index f8c6c030e9a..ed71bf9acc2 100644
--- a/.agent/skills/python-development/SKILL.md
+++ b/.agent/skills/python-development/SKILL.md
@@ -123,12 +123,18 @@ pip install build && python -m build --sdist
./gradlew :sdks:python:bdistPy311linux # For Python 3.11 on Linux
```
-### Build SDK Container
+### Build and Push SDK Container Image
```bash
-./gradlew :sdks:python:container:py39:docker \
- -Pdocker-repository-root=gcr.io/your-project -Pdocker-tag=custom
+./gradlew :sdks:python:container:py311:docker \
+ -Pdocker-repository-root=gcr.io/your-project/your-name \
+ -Pdocker-tag=custom \
+ -Ppush-containers
+
+# Container image will be pushed to:
gcr.io/your-project/your-name/beam_python3.11_sdk:custom
```
+To use this container image, supply it via `--sdk_container_image`.
+
## Running Pipelines with Modified Code
```bash
