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docs: add --no-cache-filter example

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Signed-off-by: David Karlsson <35727626+dvdksn@users.noreply.github.com>
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David Karlsson 2023-12-20 08:58:52 +01:00
parent 617f538cb3
commit ebae070f7e
1 changed files with 56 additions and 1 deletions
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docs/reference/buildx_build.md
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@ -33,7 +33,7 @@ Start a build
| [`--metadata-file`](#metadata-file) | `string` | | Write build result metadata to the file |
| `--network` | `string` | `default` | Set the networking mode for the `RUN` instructions during build |
| `--no-cache` | | | Do not use cache when building the image |
| `--no-cache-filter` | `stringArray` | | Do not cache specified stages |
| [`--no-cache-filter`](#no-cache-filter) | `stringArray` | | Do not cache specified stages |
| [`-o`](#output), [`--output`](#output) | `stringArray` | | Output destination (format: `type=local,dest=path`) |
| [`--platform`](#platform) | `stringArray` | | Set target platform for build |
| `--print` | `string` | | Print result of information request (e.g., outline, targets) |
@ -341,6 +341,61 @@ $ cat metadata.json
}
```
### <a name="no-cache-filter"></a> Ignore build cache for specific stages (--no-cache-filter)
The `--no-cache-filter` lets you specify one or more stages of a multi-stage
Dockerfile for which build cache should be ignored. To specify multiple stages,
use a comma-separated syntax:
```console
$ docker buildx build --no-cache-filter stage1,stage2,stage3 .
```
For example, the following Dockerfile contains four stages:
- `base`
- `install`
- `test`
- `release`
```dockerfile
# syntax=docker/dockerfile:1
FROM oven/bun:1 as base
WORKDIR /app
FROM base AS install
WORKDIR /temp/dev
RUN --mount=type=bind,source=package.json,target=package.json \
--mount=type=bind,source=bun.lockb,target=bun.lockb \
bun install --frozen-lockfile
FROM base AS test
COPY --from=install /temp/dev/node_modules node_modules
COPY . .
RUN bun test
FROM base AS release
ENV NODE_ENV=production
COPY --from=install /temp/dev/node_modules node_modules
COPY . .
ENTRYPOINT ["bun", "run", "index.js"]
```
To ignore the cache for the `install` stage:
```console
$ docker buildx build --no-cache-filter install .
```
To ignore the cache the `install` and `release` stages:
```console
$ docker buildx build --no-cache-filter install,release .
```
The arguments for the `--no-cache-filter` flag must be names of stages.
### <a name="output"></a> Set the export action for the build result (-o, --output)
```text