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doc: Improve wording on “Go on Docker Hub” use case

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Signed-off-by: Helder Correia <174525+helderco@users.noreply.github.com>
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Helder Correia 2022-03-30 12:10:14 +00:00
parent d8fbbf5055
commit 995881ffb5
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5 changed files with 57 additions and 66 deletions
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14
docs/tests/use-cases/ci-cd-for-go-project/complete-ci-cd/dagger.cue
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@ -30,8 +30,8 @@ dagger.#Plan & {
} }
} }
// Run go unit test // Run go unit tests
"unit-test": go.#Test & { unitTest: go.#Test & {
source: _code source: _code
package: "./..." package: "./..."
input: _base.output input: _base.output
@ -43,13 +43,10 @@ dagger.#Plan & {
} }
// Build docker image (depends on build) // Build docker image (depends on build)
image: { image: docker.#Build & {
_base: alpine.#Build & {}
docker.#Build & {
steps: [ steps: [
alpine.#Build,
docker.#Copy & { docker.#Copy & {
input: _base.output
contents: build.output contents: build.output
dest: "/usr/bin" dest: "/usr/bin"
}, },
@ -58,7 +55,6 @@ dagger.#Plan & {
}, },
] ]
} }
}
// Push image to remote registry (depends on image) // Push image to remote registry (depends on image)
push: { push: {
@ -69,7 +65,7 @@ dagger.#Plan & {
"image": image.output "image": image.output
dest: "\(_dockerUsername)/<my_repository>" dest: "\(_dockerUsername)/<my_repository>"
auth: { auth: {
username: "\(_dockerUsername)" username: _dockerUsername
secret: client.env.DOCKER_PASSWORD secret: client.env.DOCKER_PASSWORD
} }
} }

7
docs/tests/use-cases/ci-cd-for-go-project/image.cue.fragment
View File

@ -4,11 +4,9 @@ import (
) )
// Build docker image (depends on build) // Build docker image (depends on build)
image: { image: docker.#Build & {
_base: alpine.#Build & {}
docker.#Build & {
steps: [ steps: [
alpine.#Build,
docker.#Copy & { docker.#Copy & {
input: _base.output input: _base.output
contents: build.output contents: build.output
@ -18,5 +16,4 @@ image: {
config: cmd: ["</path/to/binary>"] config: cmd: ["</path/to/binary>"]
}, },
] ]
}
} }

2
docs/tests/use-cases/ci-cd-for-go-project/push.cue.fragment
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@ -7,7 +7,7 @@ push: {
"image": image.output "image": image.output
dest: "\(_dockerUsername)/<my_repository>" dest: "\(_dockerUsername)/<my_repository>"
auth: { auth: {
username: "\(_dockerUsername)" username: _dockerUsername
secret: client.env.DOCKER_PASSWORD secret: client.env.DOCKER_PASSWORD
} }
} }

4
docs/tests/use-cases/ci-cd-for-go-project/test.cue.fragment
View File

@ -1,5 +1,5 @@
// Run go unit test // Run go unit tests
"unit-test": go.#Test & { unitTest: go.#Test & {
source: _code source: _code
package: "./..." package: "./..."
input: _base.output input: _base.output

54
docs/use-cases/1219-go-docker-hub.md
View File

@ -5,22 +5,21 @@ displayed_sidebar: europa
# Go on Docker Hub # Go on Docker Hub
Dagger stand as a powerful CI/CD tool that works on any environment. Dagger stands as a powerful CI/CD tool that works on any environment.
For instance, you can use [go package](https://github.com/dagger/dagger/tree/main/pkg/universe.dagger.io/go) For instance, you can use the [Dagger Go package](https://github.com/dagger/dagger/tree/main/pkg/universe.dagger.io/go)
to control the whole CI/CD process, from test to push into a remote registry. to control the whole CI/CD process, from testing to pushing into a remote registry.
:::tip :::tip
Following examples can be used as a template for any standalone go project. The following examples can be used as a template for any standalone Go project.
::: :::
## Retrieve Go project ## Retrieve Go project
First important step is to make go project accessible in dagger plan. The first step is to make your Go project accessible to the Dagger plan.
You can indeed choose which files to include in the filesystem. You can indeed choose which files to include. Since it's a Golang project
Since it's a Golang project, filesystem should contain module and every go it should contain the module and all Go source files:
source files:
```cue file=../tests/use-cases/ci-cd-for-go-project/retrieve-go-project/dagger.cue ```cue file=../tests/use-cases/ci-cd-for-go-project/retrieve-go-project/dagger.cue
``` ```
@ -32,60 +31,59 @@ act as an alias.
## Build a Go base image ## Build a Go base image
[Dagger go universe](https://github.com/dagger/dagger/tree/main/pkg/universe.dagger.io/go) The [universe.dagger.io/go](https://github.com/dagger/dagger/tree/main/pkg/universe.dagger.io/go)
provide a [base image](https://github.com/dagger/dagger/blob/main/pkg/universe.dagger.io/go/image.cue) package provides a [base image](https://github.com/dagger/dagger/blob/main/pkg/universe.dagger.io/go/image.cue)
to build your pipeline but your project may use `CGO` or any external dependencies. to build your pipeline, but your project may use `CGO` or any external dependencies.
You can customize that base image to install required dependencies: You can customize the base image to install required dependencies:
```cue file=../tests/use-cases/ci-cd-for-go-project/base.cue.fragment ```cue file=../tests/use-cases/ci-cd-for-go-project/base.cue.fragment
``` ```
## Run unit test ## Run unit tests
Before deliver your application, you certainly want to run unit test. Before delivering your application, you certainly want to run unit tests.
By using previous steps, you can use the [test](https://github.com/dagger/dagger/blob/main/pkg/universe.dagger.io/go/test.cue) Use the [#Test](https://github.com/dagger/dagger/blob/main/pkg/universe.dagger.io/go/test.cue)
definition to run your unit test: definition:
```cue file=../tests/use-cases/ci-cd-for-go-project/test.cue.fragment ```cue file=../tests/use-cases/ci-cd-for-go-project/test.cue.fragment
``` ```
<!-- FIXME(TomChv): we should write a bunch of documentation about TDD with dagger --> <!-- FIXME(TomChv): we should write a bunch of documentation about TDD with dagger -->
:::tip :::tip
You can also use dagger to write integration tests You can also use Dagger to write integration tests.
::: :::
## Build Go binary ## Build Go binary
To put your go project on docker hub, you first need to compile a binary. To put your Go project on Docker Hub, you first need to compile a binary.
Go universe expose a [build](https://github.com/dagger/dagger/blob/main/pkg/universe.dagger.io/go/build.cue) Use the [#Build](https://github.com/dagger/dagger/blob/main/pkg/universe.dagger.io/go/build.cue)
definition so you can build a binary: definition to do that:
```cue file=../tests/use-cases/ci-cd-for-go-project/build.cue.fragment ```cue file=../tests/use-cases/ci-cd-for-go-project/build.cue.fragment
``` ```
:::tip :::tip
You can control the binary platform with `os` and `arch` field. You can control the binary platform with `os` and `arch` fields.
::: :::
## Prepare docker image ## Prepare docker image
To make it usable by other user, you must put your binary in an image and set an entrypoint. To make it usable for other users, you must put your binary in an image and set an entrypoint.
For optimisation purpose, you can use alpine as base image to contain your binary: For optimization purposes, you can use alpine as the base image to contain your binary:
```cue file=../tests/use-cases/ci-cd-for-go-project/image.cue.fragment ```cue file=../tests/use-cases/ci-cd-for-go-project/image.cue.fragment
``` ```
## Push to Docker Hub ## Push to Docker Hub
To push an image to docker hub, you will need to forward credential to allow To push an image to Docker Hub, you will need your private credentials.
dagger push.
To not hard code your docker password in the plan, you can retrieve it as an To not hard code your docker password in the plan, you can retrieve it
environment value: from your environment:
```cue ```cue
dagger.#Plan & { dagger.#Plan & {
@ -104,7 +102,7 @@ You can now push your image:
## Complete CI/CD ## Complete CI/CD
After merging all examples, you will have a complete CI/CD to deliver a go After merging all examples, you will have a complete CI/CD to deliver a Go
binary on Docker Hub. binary on Docker Hub.
```cue file=../tests/use-cases/ci-cd-for-go-project/complete-ci-cd/dagger.cue ```cue file=../tests/use-cases/ci-cd-for-go-project/complete-ci-cd/dagger.cue