**やりたいこと**  
laravel-notification-channels/twitterをインストールしたい  
<https://github.com/laravel-notification-channels/twitter>

**やったこと**  
docker-composeコマンドを使ってインストールしてます

```

    $ docker-compose exec workspace composer require laravel-notification-channels/twitter
    
```

**エラー**

```

    Your requirements could not be resolved to an installable set of packages.
    
      Problem 1
        - Conclusion: don't install laravel-notification-channels/twitter v5.0.1
        - Conclusion: remove laravel/framework v6.18.42
        - Installation request for laravel-notification-channels/twitter ^5.0 -> satisfiable by laravel-notification-channels/twitter[v5.0.0, v5.0.1].
        - Conclusion: don't install laravel/framework v6.18.42
        - laravel-notification-channels/twitter v5.0.0 requires illuminate/notifications ^8.0 -> satisfiable by illuminate/notifications[8.x-dev, v8.0.0, v8.0.1, v8.0.2, v8.0.3, v8.0.4, v8.1.0, v8.2.0, v8.3.0, v8.4.0, v8.5.0, v8.6.0, v8.7.0, v8.7.1, v8.8.0, v8.9.0].
        - don't install illuminate/notifications 8.x-dev|don't install laravel/framework v6.18.42
        - don't install illuminate/notifications v8.0.0|don't install laravel/framework v6.18.42
        - don't install illuminate/notifications v8.0.1|don't install laravel/framework v6.18.42
        - don't install illuminate/notifications v8.0.2|don't install laravel/framework v6.18.42
        - don't install illuminate/notifications v8.0.3|don't install laravel/framework v6.18.42
        - don't install illuminate/notifications v8.0.4|don't install laravel/framework v6.18.42
        - don't install illuminate/notifications v8.1.0|don't install laravel/framework v6.18.42
        - don't install illuminate/notifications v8.2.0|don't install laravel/framework v6.18.42
        - don't install illuminate/notifications v8.3.0|don't install laravel/framework v6.18.42
        - don't install illuminate/notifications v8.4.0|don't install laravel/framework v6.18.42
        - don't install illuminate/notifications v8.5.0|don't install laravel/framework v6.18.42
        - don't install illuminate/notifications v8.6.0|don't install laravel/framework v6.18.42
        - don't install illuminate/notifications v8.7.0|don't install laravel/framework v6.18.42
        - don't install illuminate/notifications v8.7.1|don't install laravel/framework v6.18.42
        - don't install illuminate/notifications v8.8.0|don't install laravel/framework v6.18.42
        - don't install illuminate/notifications v8.9.0|don't install laravel/framework v6.18.42
        - Installation request for laravel/framework (locked at v6.18.42, required as ^6.2) -> satisfiable by laravel/framework[v6.18.42].
    
    
    Installation failed, reverting ./composer.json to its original content.
    
```

**composer update** コマンドを試しましたが、結果は変わりませんでした。

**追記**  
Dockerの環境はLaradockを用いて以下のGitHubからクローンして使用しています。  
<https://github.com/Laradock/laradock.git> -b v9.6

Dockerfile.json

```

    {
        "aliases": [
            "docker"
        ],
        "case_insensitive": true,
        "keywords": "from maintainer expose env arg user onbuild stopsignal",
        "contains": [
            {
                "className": "comment",
                "begin": "#",
                "end": "$",
                "contains": [
                    {
                        "begin": "\\b(a|an|the|are|I'm|isn't|don't|doesn't|won't|but|just|should|pretty|simply|enough|gonna|going|wtf|so|such|will|you|your|they|like|more)\\b"
                    },
                    {
                        "className": "doctag",
                        "begin": "(?:TODO|FIXME|NOTE|BUG|XXX):",
                        "relevance": 0
                    }
                ]
            },
            {
                "className": "string",
                "begin": "'",
                "end": "'",
                "illegal": "\\n",
                "contains": [
                    {
                        "begin": "\\\\[\\s\\S]",
                        "relevance": 0
                    }
                ]
            },
            {
                "className": "string",
                "begin": "\"",
                "end": "\"",
                "illegal": "\\n",
                "contains": [
                    {
                        "$ref": "#contains.1.contains.0"
                    }
                ]
            },
            {
                "className": "number",
                "begin": "\\b\\d+(\\.\\d+)?",
                "relevance": 0
            },
            {
                "beginKeywords": "run cmd entrypoint volume add copy workdir label healthcheck shell",
                "starts": {
                    "end": "[^\\\\]$",
                    "subLanguage": "bash"
                }
            }
        ],
        "illegal": "<\/"
    }
    
```

composer.json

```

    {
        "name": "laravel/laravel",
        "type": "project",
        "description": "The Laravel Framework.",
        "keywords": [
            "framework",
            "laravel"
        ],
        "license": "MIT",
        "require": {
            "php": "^7.2",
            "fideloper/proxy": "^4.0",
            "laravel/framework": "^6.2",
            "laravel/socialite": "^4.4",
            "laravel/tinker": "^2.0"
        },
        "require-dev": {
            "facade/ignition": "^1.4",
            "fzaninotto/faker": "^1.4",
            "mockery/mockery": "^1.0",
            "nunomaduro/collision": "^3.0",
            "phpunit/phpunit": "^8.0"
        },
        "config": {
            "optimize-autoloader": true,
            "preferred-install": "dist",
            "sort-packages": true
        },
        "extra": {
            "laravel": {
                "dont-discover": []
            }
        },
        "autoload": {
            "psr-4": {
                "App\\": "app/"
            },
            "classmap": [
                "database/seeds",
                "database/factories"
            ]
        },
        "autoload-dev": {
            "psr-4": {
                "Tests\\": "tests/"
            }
        },
        "minimum-stability": "dev",
        "prefer-stable": true,
        "scripts": {
            "post-autoload-dump": [
                "Illuminate\\Foundation\\ComposerScripts::postAutoloadDump",
                "@php artisan package:discover --ansi"
            ],
            "post-root-package-install": [
                "@php -r \"file_exists('.env') || copy('.env.example', '.env');\""
            ],
            "post-create-project-cmd": [
                "@php artisan key:generate --ansi"
            ]
        }
    }
    
```

**Workspaceコンテナ**

```

    version: '3'
    
    networks:
      frontend:
        driver: ${NETWORKS_DRIVER}
      backend:
        driver: ${NETWORKS_DRIVER}
    
    volumes:
      mysql:
        driver: ${VOLUMES_DRIVER}
    　～略
    
    services:
    
    ### Workspace Utilities ##################################
        workspace:
          build:
            context: ./workspace
            args:
              - CHANGE_SOURCE=${CHANGE_SOURCE}
              - UBUNTU_SOURCE=${UBUNTU_SOURCE}
              - LARADOCK_PHP_VERSION=${PHP_VERSION}
              - LARADOCK_PHALCON_VERSION=${PHALCON_VERSION}
              - INSTALL_SUBVERSION=${WORKSPACE_INSTALL_SUBVERSION}
              - INSTALL_XDEBUG=${WORKSPACE_INSTALL_XDEBUG}
              - INSTALL_PCOV=${WORKSPACE_INSTALL_PCOV}
              - INSTALL_PHPDBG=${WORKSPACE_INSTALL_PHPDBG}
              - INSTALL_BLACKFIRE=${INSTALL_BLACKFIRE}
              - INSTALL_SSH2=${WORKSPACE_INSTALL_SSH2}
              - INSTALL_GMP=${WORKSPACE_INSTALL_GMP}
              - INSTALL_SOAP=${WORKSPACE_INSTALL_SOAP}
              - INSTALL_XSL=${WORKSPACE_INSTALL_XSL}
              - INSTALL_LDAP=${WORKSPACE_INSTALL_LDAP}
              - INSTALL_SMB=${WORKSPACE_INSTALL_SMB}
              - INSTALL_IMAP=${WORKSPACE_INSTALL_IMAP}
              - INSTALL_MONGO=${WORKSPACE_INSTALL_MONGO}
              - INSTALL_AMQP=${WORKSPACE_INSTALL_AMQP}
              - INSTALL_CASSANDRA=${WORKSPACE_INSTALL_CASSANDRA}
              - INSTALL_GEARMAN=${WORKSPACE_INSTALL_GEARMAN}
              - INSTALL_PHPREDIS=${WORKSPACE_INSTALL_PHPREDIS}
              - INSTALL_MSSQL=${WORKSPACE_INSTALL_MSSQL}
              - NVM_NODEJS_ORG_MIRROR=${WORKSPACE_NVM_NODEJS_ORG_MIRROR}
              - INSTALL_NODE=${WORKSPACE_INSTALL_NODE}
              - NPM_REGISTRY=${WORKSPACE_NPM_REGISTRY}
              - INSTALL_YARN=${WORKSPACE_INSTALL_YARN}
              - INSTALL_NPM_GULP=${WORKSPACE_INSTALL_NPM_GULP}
              - INSTALL_NPM_BOWER=${WORKSPACE_INSTALL_NPM_BOWER}
              - INSTALL_NPM_VUE_CLI=${WORKSPACE_INSTALL_NPM_VUE_CLI}
              - INSTALL_NPM_ANGULAR_CLI=${WORKSPACE_INSTALL_NPM_ANGULAR_CLI}
              - INSTALL_DRUSH=${WORKSPACE_INSTALL_DRUSH}
              - INSTALL_WP_CLI=${WORKSPACE_INSTALL_WP_CLI}
              - INSTALL_DRUPAL_CONSOLE=${WORKSPACE_INSTALL_DRUPAL_CONSOLE}
              - INSTALL_AEROSPIKE=${WORKSPACE_INSTALL_AEROSPIKE}
              - INSTALL_OCI8=${WORKSPACE_INSTALL_OCI8}
              - INSTALL_V8JS=${WORKSPACE_INSTALL_V8JS}
              - COMPOSER_GLOBAL_INSTALL=${WORKSPACE_COMPOSER_GLOBAL_INSTALL}
              - COMPOSER_AUTH=${WORKSPACE_COMPOSER_AUTH}
              - COMPOSER_REPO_PACKAGIST=${WORKSPACE_COMPOSER_REPO_PACKAGIST}
              - INSTALL_WORKSPACE_SSH=${WORKSPACE_INSTALL_WORKSPACE_SSH}
              - INSTALL_LARAVEL_ENVOY=${WORKSPACE_INSTALL_LARAVEL_ENVOY}
              - INSTALL_LARAVEL_INSTALLER=${WORKSPACE_INSTALL_LARAVEL_INSTALLER}
              - INSTALL_DEPLOYER=${WORKSPACE_INSTALL_DEPLOYER}
              - INSTALL_PRESTISSIMO=${WORKSPACE_INSTALL_PRESTISSIMO}
              - INSTALL_LINUXBREW=${WORKSPACE_INSTALL_LINUXBREW}
              - INSTALL_MC=${WORKSPACE_INSTALL_MC}
              - INSTALL_SYMFONY=${WORKSPACE_INSTALL_SYMFONY}
              - INSTALL_PYTHON=${WORKSPACE_INSTALL_PYTHON}
              - INSTALL_IMAGE_OPTIMIZERS=${WORKSPACE_INSTALL_IMAGE_OPTIMIZERS}
              - INSTALL_IMAGEMAGICK=${WORKSPACE_INSTALL_IMAGEMAGICK}
              - INSTALL_TERRAFORM=${WORKSPACE_INSTALL_TERRAFORM}
              - INSTALL_DUSK_DEPS=${WORKSPACE_INSTALL_DUSK_DEPS}
              - INSTALL_PG_CLIENT=${WORKSPACE_INSTALL_PG_CLIENT}
              - INSTALL_PHALCON=${WORKSPACE_INSTALL_PHALCON}
              - INSTALL_SWOOLE=${WORKSPACE_INSTALL_SWOOLE}
              - INSTALL_TAINT=${WORKSPACE_INSTALL_TAINT}
              - INSTALL_LIBPNG=${WORKSPACE_INSTALL_LIBPNG}
              - INSTALL_IONCUBE=${WORKSPACE_INSTALL_IONCUBE}
              - INSTALL_MYSQL_CLIENT=${WORKSPACE_INSTALL_MYSQL_CLIENT}
              - INSTALL_PING=${WORKSPACE_INSTALL_PING}
              - INSTALL_SSHPASS=${WORKSPACE_INSTALL_SSHPASS}
              - INSTALL_INOTIFY=${WORKSPACE_INSTALL_INOTIFY}
              - INSTALL_FSWATCH=${WORKSPACE_INSTALL_FSWATCH}
              - INSTALL_AST=${WORKSPACE_INSTALL_AST}
              - INSTALL_YAML=${WORKSPACE_INSTALL_YAML}
              - INSTALL_MAILPARSE=${WORKSPACE_INSTALL_MAILPARSE}
              - PUID=${WORKSPACE_PUID}
              - PGID=${WORKSPACE_PGID}
              - CHROME_DRIVER_VERSION=${WORKSPACE_CHROME_DRIVER_VERSION}
              - NODE_VERSION=${WORKSPACE_NODE_VERSION}
              - YARN_VERSION=${WORKSPACE_YARN_VERSION}
              - DRUSH_VERSION=${WORKSPACE_DRUSH_VERSION}
              - AST_VERSION=${WORKSPACE_AST_VERSION}
              - TZ=${WORKSPACE_TIMEZONE}
              - BLACKFIRE_CLIENT_ID=${BLACKFIRE_CLIENT_ID}
              - BLACKFIRE_CLIENT_TOKEN=${BLACKFIRE_CLIENT_TOKEN}
              - INSTALL_POWERLINE=${WORKSPACE_INSTALL_POWERLINE}
              - INSTALL_SUPERVISOR=${WORKSPACE_INSTALL_SUPERVISOR}
              - INSTALL_FFMPEG=${WORKSPACE_INSTALL_FFMPEG}
              - INSTALL_GNU_PARALLEL=${WORKSPACE_INSTALL_GNU_PARALLEL}
              - http_proxy
              - https_proxy
              - no_proxy
          volumes:
            - ${APP_CODE_PATH_HOST}:${APP_CODE_PATH_CONTAINER}${APP_CODE_CONTAINER_FLAG}
            - ./php-worker/supervisord.d:/etc/supervisord.d
          extra_hosts:
            - "dockerhost:${DOCKER_HOST_IP}"
          ports:
            - "${WORKSPACE_SSH_PORT}:22"
          tty: true
          environment:
            - PHP_IDE_CONFIG=${PHP_IDE_CONFIG}
            - DOCKER_HOST=tcp://docker-in-docker:2375
          networks:
            - frontend
            - backend
          links:
            - docker-in-docker
    
```
CC BY-SA 4.0
2020-10-13T11:55:04.703
71167
2020-10-14T05:23:05.193
2020-10-14T05:23:05.193
39431
39431
question
laravel
composer requireでエラーが出る: Your requirements could not be resolved to an installable set of packages