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feat: Add docker build args #49

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Merged
AndyRae merged 1 commit into from
Aug 5, 2026
Merged

feat: Add docker build args #49

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7 changes: 7 additions & 0 deletions .github/workflows/publish-container.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -38,6 +38,11 @@ on:
required: false
default: "linux/amd64,linux/arm64"
type: string
build-args:
description: "Build-time variables, newline-separated KEY=VALUE pairs (e.g. VERSION=1.2.3)"
required: false
default: ""
type: string

env:
image-name: ${{ inputs.image-name }}
Expand All @@ -47,6 +52,7 @@ env:
context: ${{ inputs.context }}
dockerfile: ${{ inputs.dockerfile }}
platforms: ${{ inputs.platforms }}
build-args: ${{ inputs.build-args }}

jobs:
publish-container:
Expand Down Expand Up @@ -105,6 +111,7 @@ jobs:
file: ${{ env.dockerfile }}
push: true
platforms: ${{ env.platforms }}
build-args: ${{ env.build-args }}
tags: ${{ steps.meta.outputs.tags }}
labels: ${{ steps.meta.outputs.labels }}
annotations: ${{ steps.meta.outputs.annotations }}
5 changes: 5 additions & 0 deletions docs/workflows/publish-container.md
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Expand Up @@ -19,6 +19,7 @@ This is intended for releasing dev/edge images, not stable semver releases.
| `context` | No | `'.'` | Docker build context. |
| `dockerfile` | No | `'Dockerfile'` | Path to `Dockerfile` relative to repo root/context. |
| `platforms` | No | `'linux/amd64,linux/arm64'` | Target platforms for the image. |
| `build-args` | No | `''` | Build-time variables, newline-separated `KEY=VALUE` pairs, passed through to `docker/build-push-action` (e.g. `VERSION=1.2.3`). |

## Secrets

Expand Down Expand Up @@ -47,9 +48,13 @@ jobs:
context: .
dockerfile: Dockerfile
platforms: linux/amd64,linux/arm64
build-args: |
VERSION=1.2.3
secrets: inherit
```

`build-args` is optional — omit it if your Dockerfile doesn't declare any `ARG`s you need to pass through.

This will publish images like:

- `ghcr.io/<owner>/my-service:<sha>`
Expand Down