BuildKit
Definition
BuildKit is a modern build system for Docker that enhances the efficiency and performance of building container images. It introduces features such as parallel build processing, improved caching mechanisms, and support for new frontend interfaces. BuildKit is designed to optimize the build process by reducing build times and improving resource utilization, making it a preferred choice for developers working with complex Dockerfiles.
Secure Settings Example
# Enable BuildKit in Docker CLI
export DOCKER_BUILDKIT=1
# Example Dockerfile with BuildKit features
# Use multi-stage builds to reduce image size and improve security
FROM golang:1.17 AS builder
WORKDIR /app
COPY . .
RUN go build -o myapp
FROM scratch
COPY --from=builder /app/myapp /myapp
ENTRYPOINT ["/myapp"]
Insecure Settings Example
# Build without BuildKit, leading to inefficient builds
export DOCKER_BUILDKIT=0
# Example Dockerfile without multi-stage builds
FROM golang:1.17
WORKDIR /app
COPY . .
RUN go build -o myapp
ENTRYPOINT ["./myapp"]
# This approach results in a larger image size and includes unnecessary build dependencies