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docs(docker): hint on BuildKit being required #11067

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Nov 22, 2022
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docs(docker): hint on BuildKit being required #11067

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3 changes: 3 additions & 0 deletions Dockerfile
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Original file line number Diff line number Diff line change
@@ -1,3 +1,6 @@
# This Dockerfile requires BuildKit to be enabled, by setting the environment variable
# DOCKER_BUILDKIT=1
# see https://docs.docker.com/build/buildkit/#getting-started
ARG BASE_DIGEST_AMD64="sha256:00a5775f5eb7c24a19cb76ded742cbfcc50c61f062105af9730dadde217e4390"
ARG BASE_DIGEST_ARM64="sha256:ce46be0c4b4edd9f519e99ad68a6b5765abe577fbf1662d8ad2550838eb29823"

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12 changes: 11 additions & 1 deletion docs/building_docker_images.md
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Expand Up @@ -21,6 +21,16 @@ mvn dependency:copy -B \
-Dmdep.stripVersion=true
```

## Make sure BuildKit is enabled

The Dockerfile for Zeebe requires [BuildKit](https://docs.docker.com/build/buildkit/#getting-started),
which is enabled by default if Docker Desktop is installed.
On Linux you may need to enable it explictly by setting the environment variable

```bash
DOCKER_BUILDKIT=1
```

## Build the Image

Now build the image for your local platform (supported for AMD64 and ARM64):
Expand All @@ -30,7 +40,7 @@ docker build --build-arg DISTBALL=camunda-zeebe.tar.gz -t my-zeebe:latest .
```

If you need a specific version of the [`eclipse-temurin:17-jre-focal`](https://hub.docker.com/layers/library/eclipse-temurin/17-jre-focal/images/sha256-e7fe469c4e729ff0ed6ff464f41eaff0e4cb9b6fe7efe71754d8935c8118eb87?context=explore) base image,
you can override the default BASE_DIGEST[_ADM64|ARM64] depending on your local architecture like that:
you can override the default BASE_DIGEST[_AMD64|ARM64] depending on your local architecture like that:
amd64: `--build-arg BASE_DIGEST_AMD64="sha256:00a5775f5eb7c24a19cb76ded742cbfcc50c61f062105af9730dadde217e4390"`
arm64: `--build-arg BASE_DIGEST_ARM64="sha256:ce46be0c4b4edd9f519e99ad68a6b5765abe577fbf1662d8ad2550838eb29823"`

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