drone-kaniko/README.md
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# drone-kaniko
> Note: this is a remote working branch of https://github.com/drone/drone-kaniko\
> with my personal changes on top. GH would call it a "fork".\
> Development occurs in the `dev` branch while the `main` branch remains a\
> perfect clone of the remote `main` (as long as I keep it updated).
Drone kaniko plugin uses [kaniko](https://github.com/GoogleContainerTools/kaniko) to build and publish Docker images to a container registry.
## Build
Build the binaries with the following commands:
```console
export GOOS=linux
export GOARCH=amd64
export CGO_ENABLED=0
export GO111MODULE=on
go build -v -a -tags netgo -o release/linux/amd64/kaniko-docker ./cmd/kaniko-docker
go build -v -a -tags netgo -o release/linux/amd64/kaniko-gcr ./cmd/kaniko-gcr
go build -v -a -tags netgo -o release/linux/amd64/kaniko-ecr ./cmd/kaniko-ecr
```
## Docker
Build the Docker images with the following commands:
```console
docker build \
--label org.label-schema.build-date=$(date -u +"%Y-%m-%dT%H:%M:%SZ") \
--label org.label-schema.vcs-ref=$(git rev-parse --short HEAD) \
--file docker/docker/Dockerfile.linux.amd64 --tag plugins/kaniko .
docker build \
--label org.label-schema.build-date=$(date -u +"%Y-%m-%dT%H:%M:%SZ") \
--label org.label-schema.vcs-ref=$(git rev-parse --short HEAD) \
--file docker/gcr/Dockerfile.linux.amd64 --tag plugins/kaniko-gcr .
docker build \
--label org.label-schema.build-date=$(date -u +"%Y-%m-%dT%H:%M:%SZ") \
--label org.label-schema.vcs-ref=$(git rev-parse --short HEAD) \
--file docker/ecr/Dockerfile.linux.amd64 --tag plugins/kaniko-ecr .
```
## Usage
### Manual Tagging
```console
docker run --rm \
-e PLUGIN_TAGS=1.2,latest \
-e PLUGIN_DOCKERFILE=/drone/Dockerfile \
-e PLUGIN_REPO=foo/bar \
-e PLUGIN_USERNAME=foo \
-e PLUGIN_PASSWORD=bar \
-v $(pwd):/drone \
-w /drone \
plugins/kaniko:linux-amd64
```
With expanded tagging enabled, semantic versions can be passed to PLUGIN_TAGS directly for expansion.
**Note**: this feature only works for build labels. Artifact labels are not supported.
```console
docker run --rm \
-e PLUGIN_TAGS=v1.2.3,latest \
-e PLUGIN_EXPAND_TAG=true \
-v $(pwd):/drone \
-w /drone \
plugins/kaniko:linux-amd64
```
would both be equivalent to
```
PLUGIN_TAGS=1,1.2,1.2.3,latest
```
This allows for passing `$DRONE_TAG` directly as a tag for repos that use [semver](https://semver.org) tags.
To avoid confusion between repo tags and image tags, `PLUGIN_EXPAND_TAG` also recognizes a semantic version
without the `v` prefix. As such, the following is also equivalent to the above:
```console
docker run --rm \
-e PLUGIN_TAGS=1.2.3,latest \
-e PLUGIN_EXPAND_TAG=true \
-v $(pwd):/drone \
-w /drone \
plugins/kaniko:linux-amd64
```
### Auto Tagging
The [auto tag feature](https://plugins.drone.io/drone-plugins/drone-docker) of docker plugin is also supported.
When auto tagging is enabled, if any of the case is matched below, a docker build will be pushed with auto generated tags. Otherwise the docker build will be skipped.
**Note**: this feature only works for build labels. Artifact labels are not supported.
#### Git Tag Push:
```console
docker run --rm \
-e DRONE_COMMIT_REF=refs/tags/v1.2.3 \
-e PLUGIN_REPO=foo/bar \
-e PLUGIN_USERNAME=foo \
-e PLUGIN_PASSWORD=bar \
-e PLUGIN_AUTO_TAG=true \
-v $(pwd):/drone \
-w /drone \
plugins/kaniko:linux-amd64
```
Tags to push:
- 1.2.3
- 1.2
- 1
#### Git Commit Push in default branch:
```console
docker run --rm \
-e DRONE_COMMIT_REF=refs/heads/master \
-e DRONE_REPO_BRANCH=main \
-e PLUGIN_REPO=foo/bar \
-e PLUGIN_USERNAME=foo \
-e PLUGIN_PASSWORD=bar \
-e PLUGIN_AUTO_TAG=true \
-v $(pwd):/drone \
-w /drone \
plugins/kaniko:linux-amd64
```
Tags to push:
- latest