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&2 'warning: both wordpress_DB_HOST and MysqL_PORT_3306_TCP found'                 echo >&2 "  Connecting to wordpress_DB_HOST ($wordpress_DB_HOST)"                 echo >&2 '  instead of the linked MysqL container'         fi fi   if [ -z "$wordpress_DB_HOST" ]; then         echo >&2 'error: missing wordpress_DB_HOST and MysqL_PORT_3306_TCP environment variables'         echo >&2 '  Did you forget to --link some_MysqL_container:MysqL or set an external db'         echo >&2 '  with -e wordpress_DB_HOST=hostname:port?'         exit 1 fi   # if we're linked to MysqL,and we're using the root user,and our linked # container has a default "root" password set up and passed through... :) : ${wordpress_DB_USER:=root} if [ "$wordpress_DB_USER" = 'root' ]; then         : ${wordpress_DB_PASSWORD:=$MysqL_ENV_MysqL_ROOT_PASSWORD} fi : ${wordpress_DB_NAME:=wordpress}   if [ -z "$wordpress_DB_PASSWORD" ]; then         echo >&2 'error: missing required wordpress_DB_PASSWORD environment variable'         echo >&2 '  Did you forget to -e wordpress_DB_PASSWORD=... ?'         echo >&2         echo >&2 '  (Also of interest might be wordpress_DB_USER and wordpress_DB_NAME.)'         exit 1 fi   if ! [ -e index.PHP -a -e wp-includes/version.PHP ]; then         echo >&2 "wordpress not found in $(pwd) - copying now..."         if [ "$(ls -A)" ]; then                 echo >&2 "WARNING: $(pwd) is not empty - press Ctrl+C now if this is an error!"                 ( set -x; ls -A; sleep 10 )         fi         tar cf - --one-file-system -C /usr/src/wordpress . | tar xf -         echo >&2 "Complete! wordpress has been successfully copied to $(pwd)"         if [ ! -e .htaccess ]; then                 # NOTE: The "Indexes" option is disabled in the PHP:apache base image                 cat > .htaccess <<-'EOF'                         # BEGIN wordpress                                                 RewriteEngine On                         RewriteBase /                         RewriteRule ^index\.PHP$ - [L]                         RewriteCond %{REQUEST_FILENAME} !-f                         RewriteCond %{REQUEST_FILENAME} !-d                         RewriteRule . /index.PHP [L]                                                 # END wordpress                 EOF                 chown Nginx:Nginx .htaccess         fi fi   # TODO handle wordpress upgrades magically in the same way,but only if wp-includes/version.PHP's $wp_version is less than /usr/src/wordpress/wp-includes/version.PHP's $wp_version   if [ ! -e wp-config.php ]; then         awk '/^\/\*.*stop editing.*\*\/$/ && c == 0 { c = 1; system("cat") } { print }' wp-config-sample.PHP > wp-config.php <<'EOPHP' // If we're behind a proxy server and using HTTPS,we need to alert wordpress of that fact // see also http://codex.wordpress.org/Administration_Over_SSL#Using_a_Reverse_Proxy if (isset($_SERVER['HTTP_X_FORWARDED_PROTO']) && $_SERVER['HTTP_X_FORWARDED_PROTO'] === 'https') {         $_SERVER['HTTPS'] = 'on'; } EOPHP         chown Nginx:Nginx wp-config.php fi   set_config() {         key="$1"         value="$2"         PHP_escaped_value="$(PHP -r 'var_export($argv[1]);' "$value")"         sed_escaped_value="$(echo "$PHP_escaped_value" | sed 's/[\/&]/\\&/g')"         sed -ri "s/((['\"])$key\2\s*,\s*)(['\"]).*\3/\1$sed_escaped_value/" wp-config.php }   set_config 'DB_HOST' "$wordpress_DB_HOST" set_config 'DB_USER' "$wordpress_DB_USER" set_config 'DB_PASSWORD' "$wordpress_DB_PASSWORD" set_config 'DB_NAME' "$wordpress_DB_NAME"   # allow any of these "Authentication Unique Keys and Salts." to be specified via # environment variables with a "wordpress_" prefix (ie,"wordpress_AUTH_KEY") UNIQUES=(         AUTH_KEY         SECURE_AUTH_KEY         LOGGED_IN_KEY         NONCE_KEY         AUTH_SALT         SECURE_AUTH_SALT         LOGGED_IN_SALT         NONCE_SALT ) for unique in "${UNIQUES[@]}"; do         eval unique_value=\$wordpress_$unique         if [ "$unique_value" ]; then                 set_config "$unique" "$unique_value"         else                 # if not specified,let's generate a random value                 current_set="$(sed -rn "s/define\((([\'\"])$unique\2\s*,\s*)(['\"])(.*)\3\);/\4/p" wp-config.php)"                 if [ "$current_set" = 'put your unique phrase here' ]; then                         set_config "$unique" "$(head -c1M /dev/urandom | sha1sum | cut -d' ' -f1)"                 fi         fi done   TERM=dumb PHP -- "$wordpress_DB_HOST" "$wordpress_DB_USER" "$wordpress_DB_PASSWORD" "$wordpress_DB_NAME" <<'EOPHP' connect_error) {                 # if not specified,(int)$port);         if ($MysqL->connect_error) {                 fwrite($stderr,"\n" . 'MysqL Connection Error: (' . $MysqL->connect_errno . ') ' . $MysqL->connect_error . "\n");                 --$maxTries;                 if ($maxTries <= 0) {                         exit(1);                 }                 sleep(3);         } } while ($mysql->connect_error); if (!$MysqL->query('CREATE DATABASE IF NOT EXISTS `' . $MysqL->real_escape_string($argv[4]) . '`')) {         fwrite($stderr,"\n" . 'MysqL "CREATE DATABASE" Error: ' . $MysqL->error . "\n");         $MysqL->close();         exit(1); } $MysqL->close(); EOPHP   //执行完了本脚本以后，@符号表示会执行dockerfile中entrypoint后面的指令 entrypoint ["/init.sh","/usr/bin/supervisord","-n","-c","/etc/supervisord.conf"] exec "$@"   //把PHP和PHP-fpm启动起来。

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