on tourne sans root, quotes

Dockerfile

@@ -1,16 +1,21 @@
-FROM php:apache
+FROM "php:apache"
 
-RUN apt-get update && \
+RUN sed -i'' 's/^Listen 80$/Listen 8080/' "/etc/apache2/ports.conf" && \
+    sed -i'' 's/^<VirtualHost \*:80>$/<VirtualHost *:8080>/' '/etc/apache2/sites-enabled/000-default.conf' && \
+    apt-get update && \
     apt-get -y install libpng12-dev && \
     docker-php-ext-install gd && \
     apt-get clean all && \
     a2enmod headers && \
-    rm -rf /usr/share/doc/* \
-           /var/cache/* \
-           /var/lib/apt/lists/*
+    rm -rf "/usr/share/doc/*" \
+           "/var/cache/*" \
+           "/var/lib/apt/lists/*" \
+           "/var/www/html"
 
-COPY src/ /var/www/html/
-RUN chown -R www-data:www-data /var/www/html/
+COPY "src" "/var/www/html"
+RUN chown -R "www-data":"www-data" "/var/www/html/"
+
+USER "www-data"
 
 HEALTHCHECK --interval=10s \
-    CMD curl --fail "http://localhost" || exit 1
+    CMD curl --fail "http://localhost:8080" || exit 1