Docker flutter镜像自动部署实践，踩坑记录

前言本项目主要参考cirruslabs的两个Docker脚本docker-images-flutterdocker-images-android本笔记主要是简化和增加一些实际过程中一些经验总结最简单实践案例指定SDK版本DockerfileFROM cirrusci/android-sdk:toolsENV ANDROID_PLATFORM_VERSION 29E...

北疆_

4380人浏览 · 2020-01-06 15:08:35

北疆_ · 2020-01-06 15:08:35 发布

前言

本项目主要参考cirruslabs的两个Docker脚本

docker-images-flutter
docker-images-android

本笔记主要是简化和增加一些实际过程中一些经验总结

最简单实践案例

指定SDK版本

Dockerfile

FROM cirrusci/android-sdk:tools

ENV ANDROID_PLATFORM_VERSION 29
ENV ANDROID_BUILD_TOOLS_VERSION 29.0.2

RUN yes | sdkmanager \
    "platforms;android-$ANDROID_PLATFORM_VERSION" \
    "build-tools;$ANDROID_BUILD_TOOLS_VERSION"

编译镜像，和上面Dockerfile同级目录执行

docker build -t "image_name" .

-t 指定镜像名称；
. 当前目录找Dockerfile 编译文件

如果需要多个SDK的话，可以在上次编译镜像的基础上叠一层，修改Dockfile

建议不要叠太多SDK，否则最终的镜像会很大，而且正式环境是不需要多个SDK的

Dockerfile

FROM <上次编译的镜像名称或者ID>

ENV ANDROID_PLATFORM_VERSION 29
ENV ANDROID_BUILD_TOOLS_VERSION 29.0.2

RUN yes | sdkmanager \
    "platforms;android-$ANDROID_PLATFORM_VERSION" \
    "build-tools;$ANDROID_BUILD_TOOLS_VERSION"

备注：这里提供自己编译好的SDK版本，本人比较懒提供常用编译好的SDK

dockerlinz/android-sdk:29

dockerlinz/android-sdk:28

dockerlinz/android-sdk:27

指定flutter版本

Dockerfile

FROM dockerlinz/android-sdk:27

ARG flutter_version

ENV FLUTTER_HOME=${HOME}/sdks/flutter \
    FLUTTER_ROOT=$FLUTTER_HOME \
    FLUTTER_VERSION=$flutter_version \
    PUB_HOSTED_URL=https://pub.flutter-io.cn \
    FLUTTER_STORAGE_BASE_URL=https://storage.flutter-io.cn
	
RUN mkdir -p ${FLUTTER_HOME}

ENV PATH ${PATH}:${FLUTTER_HOME}/bin:${FLUTTER_HOME}/bin/cache/dart-sdk/bin

RUN git clone --branch ${FLUTTER_VERSION} https://github.com/flutter/flutter.git ${FLUTTER_HOME} && \
    flutter doctor

这里我们使用v1.9.1-hotfixes分支

docker build --tag --build-arg flutter_version=v1.9.1-hotfixes

测试

进入flutter工程所在目录

docker run --rm -it -v ${PWD}:/build --workdir /build dockerlinz/flutter:stable flutter build apk

可以加入 -v ~/.gradle:/home/cirrus/.gradle --env GRADLE_USER_HOME=/home/cirrus/.gradle，挂在本地缓存到镜像中

注意：过来人经验，此处没有把握的话还是进入容器里面测试会更省事

docker run --rm -it -v ${PWD}:/build --workdir /build dockerlinz/flutter:stable

进入后需要重新生成.packages

fluter clean 
flutter packages get

最好进入android或mac目录执行以下原生编译脚本，查看编译环境

./gradlew build -d

最后才是flutter编译

flutter build apk

出现的问题

问题一：本地正常跑，但是镜像中很多依赖下载不下来

android studio Could not download guava.jar
Could not download kotlin-gradle-plugin.jar
flutter Build file ‘/build/android/app/build.gradle’ line: 25
Could not download kotlin-reflect.jar org.jetbrains.kotlin:kotlin-reflect:1.2.0

解决：方案

在gradle中增加阿里云国内镜像

buildscript {
    repositories {
        maven { url 'http://maven.aliyun.com/nexus/content/groups/public/' }
        google()
        jcenter()
    }

    dependencies {
        classpath 'com.android.tools.build:gradle:3.3.1'
    }
}

allprojects {
    repositories {
        maven { url 'http://maven.aliyun.com/nexus/content/groups/public/' }
        google()
        jcenter()
    }
}

挂载本地gradle 缓存到镜像中

docker run --rm -it -v ${PWD}:/build --workdir /build  -v ~/.gradle:/home/cirrus/.gradle --env GRADLE_USER_HOME=/home/cirrus/.gradle  dockerlinz/flutter:stable

问题二： flutter build apk 缓慢

每次都下载gradle版本，导致每次重新下载gradle版本

解决方案一

挂在本地缓存到镜像中

 -v ~/.gradle:/home/cirrus/.gradle --env GRADLE_USER_HOME=/home/cirrus/.gradle

解决方案二

挂在.gradle 缓存目录，不用每次编译的时候重新下载依赖
```
-v ~/.gradle2:/home/cirrus/.gradle
```

在叠一层gradle环境

#https://github.com/frekele/docker-gradle/blob/master/Dockerfile
FROM dockerlinz/flutter:1.9.1-hotfixes

# Change to tmp folder
ENV GRADLE_VERSION=4.10.2
ENV GRADLE_HOME=/opt/gradle
ENV GRADLE_FOLDER=/root/.gradle

# Change to tmp folder
WORKDIR /tmp

# Download and extract gradle to opt folder
RUN wget --no-check-certificate --no-cookies https://downloads.gradle.org/distributions/gradle-${GRADLE_VERSION}-bin.zip \
    && sudo unzip gradle-${GRADLE_VERSION}-bin.zip -d /opt \
    && sudo ln -s /opt/gradle-${GRADLE_VERSION} /opt/gradle \
    && sudo rm -f gradle-${GRADLE_VERSION}-bin.zip

# Add executables to path
RUN sudo update-alternatives --install "/usr/bin/gradle" "gradle" "/opt/gradle/bin/gradle" 1 && \
    sudo update-alternatives --set "gradle" "/opt/gradle/bin/gradle"

# Create .gradle folder
RUN sudo mkdir -p $GRADLE_FOLDER

# Mark as volume
VOLUME  $GRADLE_FOLDER

# Add the files
#ADD rootfs /

# Change to root folder
WORKDIR /home/cirrus/

Flutter 中Android工程指定本地gradle编译，不是取下载，文件目录<android_project>/.idea/gradle.xml

<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
  <component name="GradleSettings">
    <option name="linkedExternalProjectsSettings">
      <GradleProjectSettings>
        <compositeConfiguration>
          <compositeBuild compositeDefinitionSource="SCRIPT" />
        </compositeConfiguration>
        <option name="distributionType" value="LOCAL" />
        <option name="externalProjectPath" value="$PROJECT_DIR$" />
        <option name="gradleHome" value="$USER_HOME$/.gradle/wrapper/dists/gradle-4.4-all/9br9xq1tocpiv8o6njlyu5op1/gradle-4.4/bin" />
        <option name="resolveModulePerSourceSet" value="false" />
        <option name="testRunner" value="PLATFORM" />
      </GradleProjectSettings>
    </option>
  </component>
</project>