Dockerfile
# syntax = docker/dockerfile:1
# syntax = docker/dockerfile:experimental
内置变量
FROM alpine
ARG TARGETPLATFORM
| env | for |
|---|---|
| TARGETPLATFORM | 构建结果的平台 |
| TARGETOS | OS of TARGETPLATFORM |
| TARGETARCH | arch of TARGETPLATFORM |
| TARGETVARIANT | variant of TARGETPLATFORM |
| BUILDPLATFORM | 执行构建的节点的平台 |
| BUILDOS | OS of BUILDPLATFORM |
| BUILDARCH | arch of BUILDPLATFORM |
| BUILDVARIANT | variant of BUILDPLATFORM |
- platform
- linux/amd64, linux/arm/v7, windows/amd64
BuildKit 内置
| Arg | Type | Description |
|---|---|---|
| BUILDKIT_CACHE_MOUNT_NS | String | Set optional cache ID namespace. |
| BUILDKIT_CONTEXT_KEEP_GIT_DIR | Bool | Trigger git context to keep the .git directory. |
| BUILDKIT_INLINE_CACHE2 | Bool | Inline cache metadata to image config or not. |
| BUILDKIT_MULTI_PLATFORM | Bool | Opt into determnistic output regardless of multi-platform output or not. |
| BUILDKIT_SANDBOX_HOSTNAME | String | Set the hostname (default buildkitsandbox) |
| BUILDKIT_SYNTAX | String | Set frontend image |
| SOURCE_DATE_EPOCH | Int | Set the UNIX timestamp for created image and layers. More info from reproducible builds. Supported since Dockerfile 1.5, BuildKit 0.11 |
ssh clone
FROM alpine
RUN --mount=type=ssh \
apk add git openssh-client \
&& install -m 0700 -d ~/.ssh \
&& ssh-keyscan github.com >> ~/.ssh/known_hosts \
&& git clone [email protected]:wener/wode.git