不用Docker也能构建容器的4种方法

faas-cli template store pull golang-middleware

faas-cli new --lang golang-middleware \
  build-test --prefix=alexellis2

./
├── build-test
│   └── handler.go
└── build-test.yml

1 directory, 2 files

package function

import (
	"fmt"
	"io/ioutil"
	"net/http"
)

func Handle(w http.ResponseWriter, r *http.Request) {
	var input []byte

	if r.Body != nil {
		defer r.Body.Close()

		body, _ := ioutil.ReadAll(r.Body)

		input = body
	}

	w.WriteHeader(http.StatusOK)
	w.Write([]byte(fmt.Sprintf("Hello world, input was: %s", string(input))))
}

faas-cli build -f build-test.yml

FROM openfaas/of-watchdog:0.7.3 as watchdog
FROM golang:1.13-alpine3.11 as build
FROM alpine:3.12

DOCKER_BUILDKIT=1 faas-cli build -f build-test.yml

FROM openfaas/of-watchdog:0.7.3 as watchdog
FROM golang:1.13-alpine3.11 as build
FROM alpine:3.11

faas-cli build -f build-test.yml --shrinkwrap

[0] > Building build-test.
Clearing temporary build folder: ./build/build-test/
Preparing ./build-test/ ./build/build-test//function
Building: alexellis2/build-test:latest with golang-middleware template. Please wait..
build-test shrink-wrapped to ./build/build-test/
[0] < Building build-test done in 0.00s.
[0] Worker done.

Total build time: 0.00

./build/build-test/
├── Dockerfile
├── function
│   └── handler.go
├── go.mod
├── main.go
└── template.yml

1 directory, 5 files

curl -sSLf https://github.com/moby/buildkit/releases/download/v0.6.3/buildkit-v0.6.3.linux-amd64.tar.gz | sudo tar -xz -C /usr/local/bin/ --strip-components=1

sudo buildkitd 
WARN[0000] using host network as the default            
INFO[0000] found worker "l1ltft74h0ek1718gitwghjxy", labels=map[org.mobyproject.buildkit.worker.executor:oci org.mobyproject.buildkit.worker.hostname:nuc org.mobyproject.buildkit.worker.snapshotter:overlayfs], platforms=[linux/amd64 linux/386] 
WARN[0000] skipping containerd worker, as "/run/containerd/containerd.sock" does not exist 
INFO[0000] found 1 workers, default="l1ltft74h0ek1718gitwghjxy" 
WARN[0000] currently, only the default worker can be used. 
INFO[0000] running server on /run/buildkit/buildkitd.sock 

buildctl build --help
NAME:
   buildctl build - build

USAGE:
   
  To build and push an image using Dockerfile:
    $ buildctl build --frontend dockerfile.v0 --opt target=foo --opt build-arg:foo=bar --local context=. --local dockerfile=. --output type=image,name=docker.io/username/image,push=true
  

OPTIONS:
   --output value, -o value  Define exports for build result, e.g. --output type=image,name=docker.io/username/image,push=true
   --progress value          Set type of progress (auto, plain, tty). Use plain to show container output (default: "auto")
   --trace value             Path to trace file. Defaults to no tracing.
   --local value             Allow build access to the local directory
   --frontend value          Define frontend used for build
   --opt value               Define custom options for frontend, e.g. --opt target=foo --opt build-arg:foo=bar
   --no-cache                Disable cache for all the vertices
   --export-cache value      Export build cache, e.g. --export-cache type=registry,ref=example.com/foo/bar, or --export-cache type=local,dest=path/to/dir
   --import-cache value      Import build cache, e.g. --import-cache type=registry,ref=example.com/foo/bar, or --import-cache type=local,src=path/to/dir
   --secret value            Secret value exposed to the build. Format id=secretname,src=filepath
   --allow value             Allow extra privileged entitlement, e.g. network.host, security.insecure
   --ssh value               Allow forwarding SSH agent to the builder. Format default|<id>[=<socket>|<key>[,<key>]]

sudo -E buildctl build --frontend dockerfile.v0 \
 --local context=./build/build-test/ \
 --local dockerfile=./build/build-test/ \
 --output type=image,name=docker.io/alexellis2/build-test:latest,push=true

sudo curl -fSL "https://github.com/genuinetools/img/releases/download/v0.5.7/img-linux-amd64" -o "/usr/local/bin/img" \
	&& sudo chmod a+x "/usr/local/bin/img"

img build --help
Usage: img build [OPTIONS] PATH

Build an image from a Dockerfile.

Flags:

  -b, --backend  backend for snapshots ([auto native overlayfs]) (default: auto)
  --build-arg    Set build-time variables (default: [])
  -d, --debug    enable debug logging (default: false)
  -f, --file     Name of the Dockerfile (Default is 'PATH/Dockerfile') (default: <none>)
  --label        Set metadata for an image (default: [])
  --no-cache     Do not use cache when building the image (default: false)
  --no-console   Use non-console progress UI (default: false)
  --platform     Set platforms for which the image should be built (default: [])
  -s, --state    directory to hold the global state (default: /home/alex/.local/share/img)
  -t, --tag      Name and optionally a tag in the 'name:tag' format (default: [])
  --target       Set the target build stage to build (default: <none>)

sudo img build -f ./build/build-test/Dockerfile -t alexellis2/build-test:latest ./build/build-test/

fatal error: unexpected signal during runtime execution
[signal SIGSEGV: segmentation violation code=0x1 addr=0xe5 pc=0x7f84d067c420]

runtime stack:
runtime.throw(0xfa127f, 0x2a)
	/home/travis/.gimme/versions/go1.11.10.linux.amd64/src/runtime/panic.go:608 +0x72
runtime.sigpanic()
	/home/travis/.gimme/versions/go1.11.10.linux.amd64/src/runtime/signal_unix.go:374 +0x2f2

goroutine 529 [syscall]:
runtime.cgocall(0xc9d980, 0xc00072d7d8, 0x29)
	/home/travis/.gimme/versions/go1.11.10.linux.amd64/src/runtime/cgocall.go:128 +0x5e fp=0xc00072d7a0 sp=0xc00072d768 pc=0x4039ee
os/user._Cfunc_mygetgrgid_r(0x2a, 0xc000232260, 0x7f84a40008c0, 0x400, 0xc0004ba198, 0xc000000000)

docker run -v $PWD/build/build-test:/workspace \
 -v ~/.docker/config.json:/kaniko/config.json \
 --env DOCKER_CONFIG=/kaniko \
 gcr.io/kaniko-project/executor:latest \
 -d alexellis2/build-test:latest