github.com/aacfactory/fns@v1.2.86-0.20240310083819-80d667fc0a17/cmd/fns/initialization/base/docker.go (about)

     1  /*
     2   * Copyright 2023 Wang Min Xiang
     3   *
     4   * Licensed under the Apache License, Version 2.0 (the "License");
     5   * you may not use this file except in compliance with the License.
     6   * You may obtain a copy of the License at
     7   *
     8   * 	http://www.apache.org/licenses/LICENSE-2.0
     9   *
    10   * Unless required by applicable law or agreed to in writing, software
    11   * distributed under the License is distributed on an "AS IS" BASIS,
    12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13   * See the License for the specific language governing permissions and
    14   * limitations under the License.
    15   *
    16   */
    17  
    18  package base
    19  
    20  import (
    21  	"context"
    22  	"fmt"
    23  	"github.com/aacfactory/errors"
    24  	"os"
    25  	"path/filepath"
    26  	"strings"
    27  )
    28  
    29  const (
    30  	dockerfile = `# USAGE
    31  # docker build -t $$IMAGE_NAME:latest --build-arg VERSION=${VERSION} .
    32  
    33  FROM golang:$$GO_VERSION-alpine AS builder
    34  
    35  ARG VERSION=v0.0.1
    36  ENV GO111MODULE on
    37  # Enable goproxy
    38  ENV GOPROXY https://goproxy.cn,direct
    39  
    40  WORKDIR /build
    41  
    42  COPY . .
    43  
    44  RUN mkdir /dist \
    45      && go generate \
    46      && go build -ldflags "-s -w -X main.Version=${VERSION}" -o /dist/fapp \
    47      && cp -r configs /dist/configs
    48  
    49  
    50  FROM alpine
    51  
    52  COPY --from=builder /dist /
    53  
    54  # Note: when use UTC, then discard this.
    55  RUN sed -i 's#https\?://dl-cdn.alpinelinux.org/alpine#https://mirrors.cernet.edu.cn/alpine#g' /etc/apk/repositories &&  \
    56      apk add tzdata  \
    57      && cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime && echo "Asia/Shanghai" > /etc/timezone
    58  
    59  WORKDIR /
    60  
    61  # Note: expose port which is defined in config
    62  EXPOSE 18080
    63  
    64  ENTRYPOINT ["./fapp"]
    65  `
    66  )
    67  
    68  func DockerImageNameFromMod(mp string) (name string) {
    69  	modItems := strings.Split(mp, "/")
    70  	modItemsLen := len(modItems)
    71  	if modItemsLen == 1 {
    72  		name = mp
    73  	} else {
    74  		appName := modItems[modItemsLen-1]
    75  		domain := modItems[0]
    76  		if modItemsLen > 2 {
    77  			for i := modItemsLen - 2; i > 0; i-- {
    78  				appName = modItems[i] + "-" + appName
    79  			}
    80  		}
    81  		name = fmt.Sprintf("%s:%s", domain, appName)
    82  	}
    83  	return
    84  }
    85  
    86  func NewDockerFile(goVersion string, path string, dir string, dockerImageName string) (mf *DockerFile, err error) {
    87  	if !filepath.IsAbs(dir) {
    88  		dir, err = filepath.Abs(dir)
    89  		if err != nil {
    90  			err = errors.Warning("fns: new main file failed").WithCause(err).WithMeta("dir", dir)
    91  			return
    92  		}
    93  	}
    94  	mf = &DockerFile{
    95  		name:      dockerImageName,
    96  		path:      path,
    97  		filename:  filepath.ToSlash(filepath.Join(dir, "Dockerfile")),
    98  		goVersion: goVersion,
    99  	}
   100  	return
   101  }
   102  
   103  type DockerFile struct {
   104  	name      string
   105  	path      string
   106  	filename  string
   107  	goVersion string
   108  }
   109  
   110  func (f *DockerFile) Name() (name string) {
   111  	name = f.filename
   112  	return
   113  }
   114  
   115  func (f *DockerFile) Write(_ context.Context) (err error) {
   116  	content := strings.Replace(dockerfile, "$$IMAGE_NAME", f.name, 1)
   117  	content = strings.Replace(content, "$$GO_VERSION", f.goVersion, 1)
   118  	writeErr := os.WriteFile(f.filename, []byte(content), 0644)
   119  	if writeErr != nil {
   120  		err = errors.Warning("fns: dockerfile write failed").WithCause(writeErr).WithMeta("filename", f.filename)
   121  		return
   122  	}
   123  	return
   124  }