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Merged
jpmcb merged 1 commit into from
Aug 10, 2026
Merged

✨ feat: Dockerimage module for unified builds #33

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19 changes: 19 additions & 0 deletions .github/workflows/pr.yaml
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Expand Up @@ -16,6 +16,25 @@ concurrency:
cancel-in-progress: true

jobs:
check-dockerimage:
name: Docker image
runs-on: depot-ubuntu-24.04

steps:
- name: Checkout repository
uses: actions/checkout@v4

- name: Install Nix
uses: DeterminateSystems/determinate-nix-action@d96678350ffd6a456235832eb11e1c491589b7bb # v3.21.8

- name: Cache Nix store
uses: DeterminateSystems/magic-nix-cache-action@908b263ff629f4cc17666315b7fd3ec127c6244d # v14

- name: Test image builds
run: nix develop --command make -C dockerimage test
env:
DAGGER_CLOUD_TOKEN: ${{ secrets.DAGGER_CLOUD_TOKEN }}

@greptile-apps greptile-apps Bot Aug 10, 2026

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P1 security PR code receives repository token

If same-repository pull requests receive DAGGER_CLOUD_TOKEN, this job checks out the proposed changes and runs their Makefile, Nix environment, Dagger module, and Dockerfile with that credential, allowing the pull-request author to transmit the token. How this was verified: The pull_request job executes make -C dockerimage test from the checked-out changes with DAGGER_CLOUD_TOKEN in its environment.

Prompt To Fix With AI 
This is a comment left during a code review.
Path: .github/workflows/pr.yaml
Line: 36

Comment:
**PR code receives repository token**

If same-repository pull requests receive `DAGGER_CLOUD_TOKEN`, this job checks out the proposed changes and runs their Makefile, Nix environment, Dagger module, and Dockerfile with that credential, allowing the pull-request author to transmit the token. **How this was verified:** The `pull_request` job executes `make -C dockerimage test` from the checked-out changes with `DAGGER_CLOUD_TOKEN` in its environment.

---

For each issue above, determine whether it is valid and should be fixed. If so, fix it directly.

@jpmcb jpmcb Aug 10, 2026

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This is fine and a pattern we have throughout the papercomputeco org: "same-repository pull requests" are from only internal, trusted contributors (i.e., employees).


check-pr-title:
name: Check PR Title
runs-on: depot-ubuntu-24.04
Expand Down
1 change: 1 addition & 0 deletions README.md
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Expand Up @@ -11,6 +11,7 @@ this includes Go tooling, various CLIs, checks, utilities, and AI tools.
|--------|-------------|
| [`github.com/papercomputeco/daggerverse/bucketupload`](./bucketupload) | S3-compat bucket uploading |
| [`github.com/papercomputeco/daggerverse/checksum`](./checksum) | Recursively generate checksums for files in a directory |
| [`github.com/papercomputeco/daggerverse/dockerimage`](./dockerimage) | Build and publish multi-platform Dockerfile images |
| [`github.com/papercomputeco/daggerverse/ghrelease`](./ghrelease) | Flatten and upload build artifacts to GitHub releases |
| [`github.com/papercomputeco/daggerverse/golangcilint`](./golangcilint/) | Golang CI linting and checking |
| [`github.com/papercomputeco/daggerverse/utils`](./utils) | Catch-all utilities (flatten build artifacts, etc.) |
3 changes: 3 additions & 0 deletions dockerimage/.gitattributes
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/dagger.gen.go linguist-generated
/internal/dagger/** linguist-generated
/internal/telemetry/** linguist-generated
4 changes: 4 additions & 0 deletions dockerimage/.gitignore
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/dagger.gen.go
/internal/dagger
/internal/telemetry
/.env
11 changes: 11 additions & 0 deletions dockerimage/Makefile
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PLATFORMS ?= linux/amd64 linux/arm64

.PHONY: test
test:
@for platform in $(PLATFORMS); do \
dagger call \
--source=./fixtures \
with-build-arg --name=MESSAGE --value=expected \
build --platform=$$platform \
sync >/dev/null || exit 1; \
done
51 changes: 51 additions & 0 deletions dockerimage/README.md
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# github.com/papercomputeco/daggerverse/dockerimage

Builds a Dockerfile locally or publishes a multi-platform OCI image.

Publishing defaults to `linux/amd64` and `linux/arm64`. Registry authentication
is supplied by the caller's Dagger environment.

Run the image fixtures for both platforms with `make test`.

## Usage

### Build locally

```sh
dagger call \
-m github.com/papercomputeco/daggerverse/dockerimage \
--source=. \
build \
export-image --name=my-app:dev
```

Build a specific platform with a build argument, without loading it:

```sh
dagger call \
-m github.com/papercomputeco/daggerverse/dockerimage \
--source=. \
with-build-arg --name=LDFLAGS --value="-s -w" \
build --platform=linux/arm64 \
sync
```

Repeat `with-build-arg` to pass more than one argument.

### Publish

```sh
dagger call \
-m github.com/papercomputeco/daggerverse/dockerimage \
--source=. \
publish \
--repository=registry.example.com/team/my-app \
--tags=v1.0.0 \
--tags=latest
```

Use constructor options to select another Dockerfile or replace the default
publishing platforms.

For release workflows, pin the module to a commit instead of floating on the
default branch.
7 changes: 7 additions & 0 deletions dockerimage/dagger.json
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{
"name": "dockerimage",
"engineVersion": "v0.21.7",
"sdk": {
"source": "go"
}
}
4 changes: 4 additions & 0 deletions dockerimage/fixtures/Dockerfile
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FROM alpine:3.20
ARG MESSAGE=default
RUN test "$MESSAGE" = expected
CMD ["cat", "/etc/alpine-release"]
53 changes: 53 additions & 0 deletions dockerimage/go.mod
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module dagger/dockerimage

go 1.26.4

require (
github.com/Khan/genqlient v0.8.1
github.com/dagger/otel-go v1.43.0
github.com/dagger/querybuilder v0.0.0-20260402040506-574a5e81cb59
github.com/vektah/gqlparser/v2 v2.5.32
go.opentelemetry.io/otel v1.43.0
go.opentelemetry.io/otel/trace v1.43.0
)

require (
github.com/99designs/gqlgen v0.17.89 // indirect
github.com/cenkalti/backoff/v5 v5.0.3 // indirect
github.com/cespare/xxhash/v2 v2.3.0 // indirect
github.com/go-logr/logr v1.4.3 // indirect
github.com/go-logr/stdr v1.2.2 // indirect
github.com/google/uuid v1.6.0 // indirect
github.com/grpc-ecosystem/grpc-gateway/v2 v2.28.0 // indirect
github.com/sosodev/duration v1.4.0 // indirect
go.opentelemetry.io/auto/sdk v1.2.1 // indirect
go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploggrpc v0.17.0 // indirect
go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploghttp v0.17.0 // indirect
go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc v1.41.0 // indirect
go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp v1.41.0 // indirect
go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.41.0 // indirect
go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.41.0 // indirect
go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp v1.41.0 // indirect
go.opentelemetry.io/otel/log v0.17.0 // indirect
go.opentelemetry.io/otel/metric v1.43.0 // indirect
go.opentelemetry.io/otel/sdk v1.43.0
go.opentelemetry.io/otel/sdk/log v0.17.0 // indirect
go.opentelemetry.io/otel/sdk/metric v1.43.0 // indirect
go.opentelemetry.io/proto/otlp v1.9.0 // indirect
golang.org/x/net v0.51.0 // indirect
golang.org/x/sync v0.20.0 // indirect
golang.org/x/sys v0.42.0 // indirect
golang.org/x/text v0.34.0 // indirect
google.golang.org/genproto/googleapis/api v0.0.0-20260226221140-a57be14db171 // indirect
google.golang.org/genproto/googleapis/rpc v0.0.0-20260226221140-a57be14db171 // indirect
google.golang.org/grpc v1.79.3 // indirect
google.golang.org/protobuf v1.36.11 // indirect
)

replace go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploggrpc => go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploggrpc v0.16.0

replace go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploghttp => go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploghttp v0.16.0

replace go.opentelemetry.io/otel/log => go.opentelemetry.io/otel/log v0.16.0

replace go.opentelemetry.io/otel/sdk/log => go.opentelemetry.io/otel/sdk/log v0.16.0
97 changes: 97 additions & 0 deletions dockerimage/go.sum
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github.com/99designs/gqlgen v0.17.89 h1:KzEcxPiMgQoMw3m/E85atUEHyZyt0PbAflMia5Kw8z8=
github.com/99designs/gqlgen v0.17.89/go.mod h1:GFqruTVGB7ZTdrf1uzOagpXbY7DrEt1pIxnTdhIbWvQ=
github.com/Khan/genqlient v0.8.1 h1:wtOCc8N9rNynRLXN3k3CnfzheCUNKBcvXmVv5zt6WCs=
github.com/Khan/genqlient v0.8.1/go.mod h1:R2G6DzjBvCbhjsEajfRjbWdVglSH/73kSivC9TLWVjU=
github.com/agnivade/levenshtein v1.2.1 h1:EHBY3UOn1gwdy/VbFwgo4cxecRznFk7fKWN1KOX7eoM=
github.com/agnivade/levenshtein v1.2.1/go.mod h1:QVVI16kDrtSuwcpd0p1+xMC6Z/VfhtCyDIjcwga4/DU=
github.com/andreyvit/diff v0.0.0-20170406064948-c7f18ee00883 h1:bvNMNQO63//z+xNgfBlViaCIJKLlCJ6/fmUseuG0wVQ=
github.com/andreyvit/diff v0.0.0-20170406064948-c7f18ee00883/go.mod h1:rCTlJbsFo29Kk6CurOXKm700vrz8f0KW0JNfpkRJY/8=
github.com/cenkalti/backoff/v5 v5.0.3 h1:ZN+IMa753KfX5hd8vVaMixjnqRZ3y8CuJKRKj1xcsSM=
github.com/cenkalti/backoff/v5 v5.0.3/go.mod h1:rkhZdG3JZukswDf7f0cwqPNk4K0sa+F97BxZthm/crw=
github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
github.com/dagger/otel-go v1.43.0 h1:AYCnAamWmxtSxigWPTgC+8EWqiWPcDZEegh8y05gdJ8=
github.com/dagger/otel-go v1.43.0/go.mod h1:83CTuXi70zcx1kaym5buqmb7RNzg1E9dEiQSFyLbLdU=
github.com/dagger/querybuilder v0.0.0-20260402040506-574a5e81cb59 h1:g6vfdGRyz6fAjfHz5FyYPZgHy8qcQ31fHrBl1iCOzxw=
github.com/dagger/querybuilder v0.0.0-20260402040506-574a5e81cb59/go.mod h1:jsdUJeYzcbyK1j/EqMGPrQgNYxl/Zfg06vvM9C/xXxs=
github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/go-logr/logr v1.2.2/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=
github.com/go-logr/logr v1.4.3 h1:CjnDlHq8ikf6E492q6eKboGOC0T8CDaOvkHCIg8idEI=
github.com/go-logr/logr v1.4.3/go.mod h1:9T104GzyrTigFIr8wt5mBrctHMim0Nb2HLGrmQ40KvY=
github.com/go-logr/stdr v1.2.2 h1:hSWxHoqTgW2S2qGc0LTAI563KZ5YKYRhT3MFKZMbjag=
github.com/go-logr/stdr v1.2.2/go.mod h1:mMo/vtBO5dYbehREoey6XUKy/eSumjCCveDpRre4VKE=
github.com/golang/protobuf v1.5.4 h1:i7eJL8qZTpSEXOPTxNKhASYpMn+8e5Q6AdndVa1dWek=
github.com/golang/protobuf v1.5.4/go.mod h1:lnTiLA8Wa4RWRcIUkrtSVa5nRhsEGBg48fD6rSs7xps=
github.com/google/go-cmp v0.7.0 h1:wk8382ETsv4JYUZwIsn6YpYiWiBsYLSJiTsyBybVuN8=
github.com/google/go-cmp v0.7.0/go.mod h1:pXiqmnSA92OHEEa9HXL2W4E7lf9JzCmGVUdgjX3N/iU=
github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
github.com/grpc-ecosystem/grpc-gateway/v2 v2.28.0 h1:HWRh5R2+9EifMyIHV7ZV+MIZqgz+PMpZ14Jynv3O2Zs=
github.com/grpc-ecosystem/grpc-gateway/v2 v2.28.0/go.mod h1:JfhWUomR1baixubs02l85lZYYOm7LV6om4ceouMv45c=
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/sergi/go-diff v1.3.1 h1:xkr+Oxo4BOQKmkn/B9eMK0g5Kg/983T9DqqPHwYqD+8=
github.com/sergi/go-diff v1.3.1/go.mod h1:aMJSSKb2lpPvRNec0+w3fl7LP9IOFzdc9Pa4NFbPK1I=
github.com/sosodev/duration v1.4.0 h1:35ed0KiVFriGHHzZZJaZLgmTEEICIyt8Sx0RQfj9IjE=
github.com/sosodev/duration v1.4.0/go.mod h1:RQIBBX0+fMLc/D9+Jb/fwvVmo0eZvDDEERAikUR6SDg=
github.com/stretchr/testify v1.11.1 h1:7s2iGBzp5EwR7/aIZr8ao5+dra3wiQyKjjFuvgVKu7U=
github.com/stretchr/testify v1.11.1/go.mod h1:wZwfW3scLgRK+23gO65QZefKpKQRnfz6sD981Nm4B6U=
github.com/vektah/gqlparser/v2 v2.5.32 h1:k9QPJd4sEDTL+qB4ncPLflqTJ3MmjB9SrVzJrawpFSc=
github.com/vektah/gqlparser/v2 v2.5.32/go.mod h1:c1I28gSOVNzlfc4WuDlqU7voQnsqI6OG2amkBAFmgts=
go.opentelemetry.io/auto/sdk v1.2.1 h1:jXsnJ4Lmnqd11kwkBV2LgLoFMZKizbCi5fNZ/ipaZ64=
go.opentelemetry.io/auto/sdk v1.2.1/go.mod h1:KRTj+aOaElaLi+wW1kO/DZRXwkF4C5xPbEe3ZiIhN7Y=
go.opentelemetry.io/otel v1.43.0 h1:mYIM03dnh5zfN7HautFE4ieIig9amkNANT+xcVxAj9I=
go.opentelemetry.io/otel v1.43.0/go.mod h1:JuG+u74mvjvcm8vj8pI5XiHy1zDeoCS2LB1spIq7Ay0=
go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploggrpc v0.16.0 h1:ZVg+kCXxd9LtAaQNKBxAvJ5NpMf7LpvEr4MIZqb0TMQ=
go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploggrpc v0.16.0/go.mod h1:hh0tMeZ75CCXrHd9OXRYxTlCAdxcXioWHFIpYw2rZu8=
go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploghttp v0.16.0 h1:djrxvDxAe44mJUrKataUbOhCKhR3F8QCyWucO16hTQs=
go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploghttp v0.16.0/go.mod h1:dt3nxpQEiSoKvfTVxp3TUg5fHPLhKtbcnN3Z1I1ePD0=
go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc v1.41.0 h1:VO3BL6OZXRQ1yQc8W6EVfJzINeJ35BkiHx4MYfoQf44=
go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc v1.41.0/go.mod h1:qRDnJ2nv3CQXMK2HUd9K9VtvedsPAce3S+/4LZHjX/s=
go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp v1.41.0 h1:MMrOAN8H1FrvDyq9UJ4lu5/+ss49Qgfgb7Zpm0m8ABo=
go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp v1.41.0/go.mod h1:Na+2NNASJtF+uT4NxDe0G+NQb+bUgdPDfwxY/6JmS/c=
go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.41.0 h1:ao6Oe+wSebTlQ1OEht7jlYTzQKE+pnx/iNywFvTbuuI=
go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.41.0/go.mod h1:u3T6vz0gh/NVzgDgiwkgLxpsSF6PaPmo2il0apGJbls=
go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.41.0 h1:mq/Qcf28TWz719lE3/hMB4KkyDuLJIvgJnFGcd0kEUI=
go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.41.0/go.mod h1:yk5LXEYhsL2htyDNJbEq7fWzNEigeEdV5xBF/Y+kAv0=
go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp v1.41.0 h1:inYW9ZhgqiDqh6BioM7DVHHzEGVq76Db5897WLGZ5Go=
go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp v1.41.0/go.mod h1:Izur+Wt8gClgMJqO/cZ8wdeeMryJ/xxiOVgFSSfpDTY=
go.opentelemetry.io/otel/log v0.16.0 h1:DeuBPqCi6pQwtCK0pO4fvMB5eBq6sNxEnuTs88pjsN4=
go.opentelemetry.io/otel/log v0.16.0/go.mod h1:rWsmqNVTLIA8UnwYVOItjyEZDbKIkMxdQunsIhpUMes=
go.opentelemetry.io/otel/metric v1.43.0 h1:d7638QeInOnuwOONPp4JAOGfbCEpYb+K6DVWvdxGzgM=
go.opentelemetry.io/otel/metric v1.43.0/go.mod h1:RDnPtIxvqlgO8GRW18W6Z/4P462ldprJtfxHxyKd2PY=
go.opentelemetry.io/otel/sdk v1.43.0 h1:pi5mE86i5rTeLXqoF/hhiBtUNcrAGHLKQdhg4h4V9Dg=
go.opentelemetry.io/otel/sdk v1.43.0/go.mod h1:P+IkVU3iWukmiit/Yf9AWvpyRDlUeBaRg6Y+C58QHzg=
go.opentelemetry.io/otel/sdk/log v0.16.0 h1:e/b4bdlQwC5fnGtG3dlXUrNOnP7c8YLVSpSfEBIkTnI=
go.opentelemetry.io/otel/sdk/log v0.16.0/go.mod h1:JKfP3T6ycy7QEuv3Hj8oKDy7KItrEkus8XJE6EoSzw4=
go.opentelemetry.io/otel/sdk/log/logtest v0.16.0 h1:/XVkpZ41rVRTP4DfMgYv1nEtNmf65XPPyAdqV90TMy4=
go.opentelemetry.io/otel/sdk/log/logtest v0.16.0/go.mod h1:iOOPgQr5MY9oac/F5W86mXdeyWZGleIx3uXO98X2R6Y=
go.opentelemetry.io/otel/sdk/metric v1.43.0 h1:S88dyqXjJkuBNLeMcVPRFXpRw2fuwdvfCGLEo89fDkw=
go.opentelemetry.io/otel/sdk/metric v1.43.0/go.mod h1:C/RJtwSEJ5hzTiUz5pXF1kILHStzb9zFlIEe85bhj6A=
go.opentelemetry.io/otel/trace v1.43.0 h1:BkNrHpup+4k4w+ZZ86CZoHHEkohws8AY+WTX09nk+3A=
go.opentelemetry.io/otel/trace v1.43.0/go.mod h1:/QJhyVBUUswCphDVxq+8mld+AvhXZLhe+8WVFxiFff0=
go.opentelemetry.io/proto/otlp v1.9.0 h1:l706jCMITVouPOqEnii2fIAuO3IVGBRPV5ICjceRb/A=
go.opentelemetry.io/proto/otlp v1.9.0/go.mod h1:xE+Cx5E/eEHw+ISFkwPLwCZefwVjY+pqKg1qcK03+/4=
go.uber.org/goleak v1.3.0 h1:2K3zAYmnTNqV73imy9J1T3WC+gmCePx2hEGkimedGto=
go.uber.org/goleak v1.3.0/go.mod h1:CoHD4mav9JJNrW/WLlf7HGZPjdw8EucARQHekz1X6bE=
golang.org/x/net v0.51.0 h1:94R/GTO7mt3/4wIKpcR5gkGmRLOuE/2hNGeWq/GBIFo=
golang.org/x/net v0.51.0/go.mod h1:aamm+2QF5ogm02fjy5Bb7CQ0WMt1/WVM7FtyaTLlA9Y=
golang.org/x/sync v0.20.0 h1:e0PTpb7pjO8GAtTs2dQ6jYa5BWYlMuX047Dco/pItO4=
golang.org/x/sync v0.20.0/go.mod h1:9xrNwdLfx4jkKbNva9FpL6vEN7evnE43NNNJQ2LF3+0=
golang.org/x/sys v0.42.0 h1:omrd2nAlyT5ESRdCLYdm3+fMfNFE/+Rf4bDIQImRJeo=
golang.org/x/sys v0.42.0/go.mod h1:4GL1E5IUh+htKOUEOaiffhrAeqysfVGipDYzABqnCmw=
golang.org/x/text v0.34.0 h1:oL/Qq0Kdaqxa1KbNeMKwQq0reLCCaFtqu2eNuSeNHbk=
golang.org/x/text v0.34.0/go.mod h1:homfLqTYRFyVYemLBFl5GgL/DWEiH5wcsQ5gSh1yziA=
gonum.org/v1/gonum v0.16.0 h1:5+ul4Swaf3ESvrOnidPp4GZbzf0mxVQpDCYUQE7OJfk=
gonum.org/v1/gonum v0.16.0/go.mod h1:fef3am4MQ93R2HHpKnLk4/Tbh/s0+wqD5nfa6Pnwy4E=
google.golang.org/genproto/googleapis/api v0.0.0-20260226221140-a57be14db171 h1:tu/dtnW1o3wfaxCOjSLn5IRX4YDcJrtlpzYkhHhGaC4=
google.golang.org/genproto/googleapis/api v0.0.0-20260226221140-a57be14db171/go.mod h1:M5krXqk4GhBKvB596udGL3UyjL4I1+cTbK0orROM9ng=
google.golang.org/genproto/googleapis/rpc v0.0.0-20260226221140-a57be14db171 h1:ggcbiqK8WWh6l1dnltU4BgWGIGo+EVYxCaAPih/zQXQ=
google.golang.org/genproto/googleapis/rpc v0.0.0-20260226221140-a57be14db171/go.mod h1:4Hqkh8ycfw05ld/3BWL7rJOSfebL2Q+DVDeRgYgxUU8=
google.golang.org/grpc v1.79.3 h1:sybAEdRIEtvcD68Gx7dmnwjZKlyfuc61Dyo9pGXXkKE=
google.golang.org/grpc v1.79.3/go.mod h1:KmT0Kjez+0dde/v2j9vzwoAScgEPx/Bw1CYChhHLrHQ=
google.golang.org/protobuf v1.36.11 h1:fV6ZwhNocDyBLK0dj+fg8ektcVegBBuEolpbTQyBNVE=
google.golang.org/protobuf v1.36.11/go.mod h1:HTf+CrKn2C3g5S8VImy6tdcUvCska2kB7j23XfzDpco=
gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
125 changes: 125 additions & 0 deletions dockerimage/main.go
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// Build and publish multi-platform images from Dockerfiles.
package main

import (
"context"
"fmt"

"dagger/dockerimage/internal/dagger"
)

var defaultPlatforms = []dagger.Platform{
"linux/amd64",
"linux/arm64",
}

type buildArg struct {
Name string
Value string
}

// Dockerimage builds and publishes a Dockerfile from a source directory.
type Dockerimage struct {
// +private
Source *dagger.Directory

// +private
Dockerfile string

// +private
BuildArgs []buildArg

// +private
Platforms []dagger.Platform
}

// New configures a Dockerfile image workflow.
func New(
// Build context.
// +defaultPath="/"
source *dagger.Directory,

// Dockerfile path relative to the build context.
// +optional
// +default="Dockerfile"
dockerfile string,

// Platforms included when publishing.
// +optional
platforms []dagger.Platform,
) *Dockerimage {
if len(platforms) == 0 {
platforms = defaultPlatforms
}

return &Dockerimage{
Source: source,
Dockerfile: dockerfile,
Platforms: platforms,
}
}

// WithBuildArg adds a Docker build argument.
func (m *Dockerimage) WithBuildArg(name, value string) *Dockerimage {
m.BuildArgs = append(m.BuildArgs, buildArg{Name: name, Value: value})
return m
}

// Build builds the image for the local platform, or for platform when provided.
func (m *Dockerimage) Build(
// Target platform, for example linux/arm64.
// +optional
platform dagger.Platform,
) *dagger.Container {
buildArgs := make([]dagger.BuildArg, 0, len(m.BuildArgs))
for _, arg := range m.BuildArgs {
buildArgs = append(buildArgs, dagger.BuildArg{Name: arg.Name, Value: arg.Value})
}

return m.Source.DockerBuild(dagger.DirectoryDockerBuildOpts{
Dockerfile: m.Dockerfile,
BuildArgs: buildArgs,
Platform: platform,
})
}

// Publish builds all configured platform variants and publishes each tag.
func (m *Dockerimage) Publish(
ctx context.Context,

// Complete untagged repository, for example registry.example.com/team/app.
repository string,

// Tags to publish, for example ["v1.0.0", "latest"].
tags []string,
) ([]string, error) {
if repository == "" {
return nil, fmt.Errorf("repository is required")
}
if len(tags) == 0 {
return nil, fmt.Errorf("at least one tag is required")
}

variants := make([]*dagger.Container, 0, len(m.Platforms))
for _, platform := range m.Platforms {
variants = append(variants, m.Build(platform))
}

published := make([]string, 0, len(tags))
for _, tag := range tags {
if tag == "" {
return published, fmt.Errorf("tag must not be empty")
}

ref := fmt.Sprintf("%s:%s", repository, tag)
address, err := dag.Container().Publish(ctx, ref, dagger.ContainerPublishOpts{
PlatformVariants: variants,
})
if err != nil {
return published, fmt.Errorf("failed to publish %s: %w", ref, err)
}
published = append(published, address)
}

return published, nil
}
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