Update Dockerfile.alpine

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Dockerfile.alpine

@@ -9,17 +9,19 @@ RUN apk add --quiet --no-cache \
     apache2 \
     wget \
     curl \
-    build-base \
-    autoconf \
-    libpng-dev \
-    libjpeg-turbo-dev \
-    libwebp-dev \
-    freetype-dev \
-    libxml2-dev \
-    mariadb-connector-c-dev \
-    postgresql-dev \
-    sqlite-dev \
-    && install-php-extensions gd pdo pdo_mysql pdo_pgsql pdo_sqlite pgsql zip
+    && apk add --quiet --no-cache --virtual .build-deps \
+        build-base \
+        autoconf \
+        libpng-dev \
+        libjpeg-turbo-dev \
+        libwebp-dev \
+        freetype-dev \
+        libxml2-dev \
+        mariadb-connector-c-dev \
+        postgresql-dev \
+        sqlite-dev \
+    && install-php-extensions gd pdo pdo_mysql pdo_pgsql pdo_sqlite pgsql zip \
+    && apk del .build-deps
 
 # Note: PHP extensions are provided via Alpine `php-*` packages above.
 # The docker-php-extension-installer is redundant when using those packages,