制作 PHP 7 + Nginx 的基础镜像，要求能够通过环境变量修改 PHP 和 Nginx 的部分常用配置。并且支持自定义启动脚本。
Dockerfile
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# 3.10 没有 php7-mongodb包，继续用3.8 FROM alpine:3.8 ENV TIMEZONE Asia/Shanghai RUN mkdir -p /home/wwwroot/default && \ mkdir -p /run/nginx && \ mkdir /home/nobody && chown -R nobody.nobody /home/nobody && \ sed -i 's/dl-cdn.alpinelinux.org/mirrors.aliyun.com/g' /etc/apk/repositories && \ sed -ri 's#^(nobody:.*)?:/:(.*)#\1:/home/nobody:\2#g' /etc/passwd RUN apk add --no-cache tzdata && \ cp /usr/share/zoneinfo/${TIMEZONE} /etc/localtime && \ echo "${TIMEZONE}" > /etc/timezone RUN apk add --no-cache dumb-init nginx php7 php7-fpm php7-common php7-gd \ php7-json php7-curl php7-mbstring php7-iconv php7-opcache \ php7-bcmath php7-ctype php7-xmlreader php7-xmlwriter php7-session \ php7-sockets php7-gettext php7-ldap php7-mongodb \ php7-mysqli php7-mysqlnd php7-pdo_mysql && \ sed -i -e "s/;daemonize\s*=\s*yes/daemonize = no/g" /etc/php7/php-fpm.conf && \ sed -i "s|;date.timezone =.*|date.timezone = ${TIMEZONE}|" /etc/php7/php.ini COPY conf/default.conf /etc/nginx/conf.d/ COPY conf/nginx.conf /etc/nginx/ # 日志输入到标准输出 RUN ln -sf /dev/stdout /var/log/nginx/access.log && \ ln -sf /dev/stderr /var/log/nginx/error.log && \ ln -sf /dev/stderr /var/log/php7/error.log COPY init.sh / RUN chmod +x /init.sh ENTRYPOINT ["/usr/bin/dumb-init", "-v", "--rewrite", "15:3"] CMD ["/init.sh"] |
--rewrite 15:3 意思是把 SIGTERM 重写为 SIGQUIT，因为对 Nginx 来说，SIGQUIT 是 优雅退出。
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TERM, INT fast shutdown QUIT graceful shutdown HUP changing configuration, keeping up with a changed time zone (only for FreeBSD and Linux), starting new worker processes with a new configuration, graceful shutdown of old worker processes USR1 re-opening log files USR2 upgrading an executable file WINCH graceful shutdown of worker processes |
Nginx default.conf：
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server { listen 80; server_name *.yourserver.com; index index.html index.htm index.php; root /home/wwwroot/default; location ~ .php(/|$) { fastcgi_pass 127.0.0.1:9000; fastcgi_index index.php; include fastcgi_params; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; fastcgi_param PATH_INFO $fastcgi_script_name; } location ~ .*\.(gif|jpg|jpeg|png|bmp|swf)$ { expires 30d; } location ~ .*\.(js|css)?$ { expires 12h; } location ~ /\. { deny all; } } |
自定义配置
在 init.sh 处理。
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#!/bin/sh function getEnv() { if [ "$1"x == ""x ];then echo $2 else echo $1 fi } PHP_FPM_MODE=`getEnv "$PHP_FPM_MODE" "dynamic"` PHP_FPM_MAX_CHILDREN=`getEnv "$PHP_FPM_MAX_CHILDREN" "100"` PHP_FPM_START_SERVERS=`getEnv "$PHP_FPM_START_SERVERS" "30"` PHP_FPM_MIN_SPARE_SERVERS=`getEnv "$PHP_FPM_MIN_SPARE_SERVERS" "10"` PHP_FPM_MAX_SPARE_SERVERS=`getEnv "$PHP_FPM_MAX_SPARE_SERVERS" "50"` PHP_FPM_MAX_REQUESTS=`getEnv "$PHP_FPM_MAX_REQUESTS" "100000"` NGINX_WORKER_CONNECTIONS=`getEnv "$NGINX_WORKER_CONNECTIONS" "65535"` NGINX_WORKER_RLIMIT_NOFILE=`getEnv "$NGINX_WORKER_RLIMIT_NOFILE" "80000"` NGINX_WORKER_PROCESSES=`getEnv "$NGINX_WORKER_PROCESSES" "auto"` PHP_CONF="/etc/php7/php-fpm.d/www.conf" NGINX_CONF="/etc/nginx/nginx.conf" sed -i "s/^pm = .*/pm = $PHP_FPM_MODE/g" $PHP_CONF sed -i "s/^pm.max_children = .*/pm.max_children = $PHP_FPM_MAX_CHILDREN/g" $PHP_CONF sed -i "s/^pm.start_servers = .*/pm.start_servers = $PHP_FPM_START_SERVERS/g" $PHP_CONF sed -i "s/^pm.min_spare_servers = .*/pm.min_spare_servers = $PHP_FPM_MIN_SPARE_SERVERS/g" $PHP_CONF sed -i "s/^pm.max_spare_servers = .*/pm.max_spare_servers = $PHP_FPM_MAX_SPARE_SERVERS/g" $PHP_CONF sed -i "s/^;pm.max_requests = .*/pm.max_requests = $PHP_FPM_MAX_REQUESTS/g" $PHP_CONF sed -i "s/worker_rlimit_nofile .*/worker_rlimit_nofile $NGINX_WORKER_RLIMIT_NOFILE;/g" $NGINX_CONF sed -i "s/worker_connections .*/worker_connections $NGINX_WORKER_CONNECTIONS;/g" $NGINX_CONF sed -i "s/worker_processes .*/worker_processes $NGINX_WORKER_PROCESSES;/g" $NGINX_CONF # catch_workers_output = yes 日志输出到stdout stderr echo "catch_workers_output = yes" >> $PHP_CONF chown -R nobody.nobody /home/wwwroot/default/ # PHP读取到环境变量 env |grep -v "=$" | grep "=" | sed -r "s/([a-zA-Z0-9_.]+)=(.*)/env[\1]='\2'/" |grep "^env\[" >> $PHP_CONF crond php-fpm7 -D exec nginx |
自定义启动脚本
init.sh 中：
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# 自定义脚本 if [ -f /app.sh ];then source /app.sh fi crond php-fpm7 -D exec nginx |
然后使用该镜像的业务可以在 app.sh 中加入自定义脚本。
参考资料
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1. http://nginx.org/en/docs/control.html |
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