製作 php Docker Image 紀錄 [Jonathan's Wiki 筆記]

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====== 製作 php Docker Image 紀錄 ======
因為想將之前一個 php 專案改用 Docker 方式處理, 進行修改的紀錄

===== 原本系統安裝方式 =====
  * OS : CentOS Linux release 7.5.1804 (Core) (PVE VM)
  * 安裝可支援套件 <cli>
yum install epel-release
rpm -Uvh https://mirror.webtatic.com/yum/el7/webtatic-release.rpm
yum install -y sysstat net-snmp freetds subversion php70w php70w-opcache php70w-mysql php70w-gd php70w-mbstring php70w-soap php70w-xml php70w-pdo_dblib
</cli>
  * 安裝 Composer <cli>
su - root
php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"
php -r "if (hash_file('SHA384', 'composer-setup.php') === '93b54496392c062774670ac18b134c3b3a95e5a5e5c8f1a9f115f203b75bf9a129d5daa8ba6a13e2cc8a1da0806388a8') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;"
php composer-setup.php
php -r "unlink('composer-setup.php');"
</cli>
  * 安裝 Google Client Library <cli>
php composer.phar require google/apiclient:^2.0
</cli>
  * 安裝專案 php 程式碼 <cli>
mkdir -p /root/googlesheet/
svn co https://192.168.1.30/repos/erptools/googlesheet/ /root/googlesheet/
cd /root/googlesheet/
ln -s ../vendor .
</cli>
  * 使用語法 <cli>php /root/googlesheet/db-googlesheet.php 1I8mYIdjXZKPIGVMmpre8cTqIPxxxxxxxxxxJNr9zehE</cli>

===== 改成 Dockerfile 安裝方式 =====
  * 環境改變項目:
    * php 改用 7.1 -> docker hub php:7.1-cli (OS:debian 10)
    * 改用 git repo
    * 程式碼修改
      * 要增加支援 PostgreSQL
      * 將原本讀取 DB 設定檔改用環境變數方式處理
    * 先使用 <cli>docker run -i -t php:7.1-cli bash</cli> 進行安裝驗證, 然後將驗證的語法寫成以下 Dockerfile 內容<file>
FROM dockerhub/library/php:7.1-cli

# Install OS tools
RUN apt-get update && apt-get install --no-install-recommends -y \
        wget \
        vim \
        git \
        unzip \
        gnupg

# Set timezone
ENV TZ=Asia/Taipei
RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone

# Add PostgreSQL repository
RUN echo "deb http://apt.postgresql.org/pub/repos/apt/ buster-pgdg main" > /etc/apt/sources.list.d/pgdg.list \
    && curl -k -s https://www.postgresql.org/media/keys/ACCC4CF8.asc | apt-key add -

# Install PHP extensions deps
RUN apt-get update && apt-get install --no-install-recommends -y \
        postgresql-server-dev-10 \
        unixodbc-dev \
        freetds-bin \
        freetds-dev \
        libssl-dev \
        openssl

# Install PHP extensions
RUN docker-php-ext-configure pdo_dblib --with-libdir=/lib/x86_64-linux-gnu \
    && pecl install sqlsrv-4.1.6.1 \
    && pecl install pdo_sqlsrv-4.1.6.1 \
    && docker-php-ext-install \
            mbstring \
            pgsql \
            mysqli \
            pdo_pgsql \
            pdo_mysql \
            pdo_dblib \
    && docker-php-ext-enable \
            sqlsrv \
            pdo_sqlsrv \
            opcache

# Clean repository
RUN apt-get clean \
    && rm -rf /var/lib/apt/lists/*

# Install Composer
RUN curl -sS https://getcomposer.org/installer | php -- \
        --install-dir=/usr/local/bin \
        --filename=composer

# Install composer lib
RUN mkdir -p /root/googlesheet/ \
    && cd /root/googlesheet/ \
    && composer require google/apiclient:^2.0

# install php repo
# cd /root && git clone https://192.168.1.31/root/erptools_googlesheet.git
# cp -f /root/erptools_googlesheet/app/* /root/googlesheet/

COPY app /root/googlesheet
WORKDIR /root/googlesheet
ENTRYPOINT ["php", "db-googlesheet.php"]
</file>
  * db-googlesheet.php 內
    * 增加依據環境變數 TZ 的值來設定時區 <file>
:
require_once __DIR__ . '/vendor/autoload.php';
if (isset($_ENV["TZ"])) {
	date_default_timezone_set($_ENV["TZ"]);
}
:
</file>
    * 依據環境變數來設定原本設定檔案的參數 <file>
:
	// 判別環境變數是否有定義 DB_ID / DB_SERVER / DB_NAME / DB_USER / DB_PASSWD
	$db_id = $_ENV["DB_ID"];
	if ($db_id == $t_DB_ID) {
		$db_server = $_ENV["DB_SERVER"];
		$db_port = $_ENV["DB_PORT"];
		$db_name = $_ENV["DB_NAME"];
		$db_user = $_ENV["DB_USER"];
		$db_passwd = $_ENV["DB_PASSWD"];
	}
	else {
		print("The source database connection information (DB_ID, DB_SERVER, DB_NAME, DB_USER, DB_PASSWD) should be defined in the environment variables!\n");
		exit;
	}
:
</file>
  * 建立出的 docker image 為 tryweb/db-googlesheet:latest
  * 使用語法 <cli>
docker run \
-e DB_ID=dev3-redmine \
-e DB_SERVER=192.168.4.13 \
-e DB_PORT=5432 \
-e DB_NAME=redminedb \
-e DB_USER=redmine \
-e DB_PASSWD=hBp1wxxxxxxxxxxsxgBmLv7Em4Hx \
tryweb/db-googlesheet 1I8mYIdjXZKPIGVMmpre8cTqIPxxxxxxxxxxJNr9zehE</cli>

===== 參考網址 =====
  * https://github.com/merorafael/docker-php-cli/blob/master/7.1/Dockerfile
  * https://docs.docker.com/develop/develop-images/dockerfile_best-practices/

{{tag>docker k8s php}}