Fix typo

Author: Teakowa

Dockerfile

@@ -2,8 +2,8 @@ FROM alpine:3.11.5 as builder
 
 ARG PHP_VERSION=7.4.4
 ARG COMPOSER_VERSION=1.10.1
-ARG PHP_URL=https://www.php.net/get/php-$PHP_VERSION.tar.xz/from/this/mirror
-ARG PHP_ASC_URL=https://www.php.net/get/php-$PHP_VERSION.tar.xz.asc/from/this/mirror
+ARG PHP_URL=https://www.php.net/distributions/php-$PHP_VERSION.tar.xz
+ARG PHP_ASC_URL=https://www.php.net/distributions/php-$PHP_VERSION.tar.xz.asc
 ENV GPG_KEYS 42670A7FE4D0441C8E4632349E4FDC074A4EF02D 5A52880781F755608BF815FC910DEB46F53EA312
 
 ENV PHP_INI_DIR /usr/local/etc/php
@@ -13,8 +13,8 @@ RUN set -ex \
   && apk add --no-cache curl gnupg \
   && mkdir -p /usr/src \
   && cd /usr/src \
-  && curl -fsSL -o php.tar.xz $PHP_URL \
-  && curl -fsSL -o php.tar.xz.asc $PHP_ASC_URL \
+  && curl -fsSL -o php.tar.xz "$PHP_URL" \
+  && curl -fsSL -o php.tar.xz.asc "$PHP_ASC_URL" \
   && export GNUPGHOME="$(mktemp -d)"; \
     for key in $GPG_KEYS; do \
       gpg --batch --keyserver ha.pool.sks-keyservers.net --keyserver-options timeout=10 --recv-keys "$key" || \