fix: Retry failed apt package downloads when building the PHP images

Author: codyfinegan

php/php73/Dockerfile

@@ -2,6 +2,10 @@ FROM php:7.3-fpm-bullseye
 
 ARG TIME_ZONE=Pacific/Auckland
 
+# apt does not retry failed downloads, so a single timed out .deb from the Debian CDN fails
+# the whole build. Older suites go cold in the CDN more often, but any suite can time out.
+RUN echo 'Acquire::Retries "5";' > /etc/apt/apt.conf.d/80-retries
+
 RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y \
         apt-transport-https \
         libgd3 \

php/php74/Dockerfile

@@ -2,6 +2,10 @@ FROM php:7.4-fpm-bullseye
 
 ARG TIME_ZONE=Pacific/Auckland
 
+# apt does not retry failed downloads, so a single timed out .deb from the Debian CDN fails
+# the whole build. Older suites go cold in the CDN more often, but any suite can time out.
+RUN echo 'Acquire::Retries "5";' > /etc/apt/apt.conf.d/80-retries
+
 RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y \
         apt-transport-https \
         libfreetype6-dev \

php/php80/Dockerfile

@@ -2,6 +2,10 @@ FROM php:8.0-fpm-bullseye
 
 ARG TIME_ZONE=Pacific/Auckland
 
+# apt does not retry failed downloads, so a single timed out .deb from the Debian CDN fails
+# the whole build. Older suites go cold in the CDN more often, but any suite can time out.
+RUN echo 'Acquire::Retries "5";' > /etc/apt/apt.conf.d/80-retries
+
 RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y \
         apt-transport-https \
         libfreetype6-dev \

php/php81/Dockerfile

@@ -2,6 +2,10 @@ FROM php:8.1-fpm-bookworm
 
 ARG TIME_ZONE=Pacific/Auckland
 
+# apt does not retry failed downloads, so a single timed out .deb from the Debian CDN fails
+# the whole build. Older suites go cold in the CDN more often, but any suite can time out.
+RUN echo 'Acquire::Retries "5";' > /etc/apt/apt.conf.d/80-retries
+
 RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y \
         apt-transport-https \
         libfreetype6-dev \

php/php82/Dockerfile

@@ -2,6 +2,10 @@ FROM php:8.2-fpm-bookworm
 
 ARG TIME_ZONE=Pacific/Auckland
 
+# apt does not retry failed downloads, so a single timed out .deb from the Debian CDN fails
+# the whole build. Older suites go cold in the CDN more often, but any suite can time out.
+RUN echo 'Acquire::Retries "5";' > /etc/apt/apt.conf.d/80-retries
+
 RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y \
         apt-transport-https \
         libfreetype6-dev \

php/php83/Dockerfile

@@ -2,6 +2,10 @@ FROM php:8.3-fpm-bookworm
 
 ARG TIME_ZONE=Pacific/Auckland
 
+# apt does not retry failed downloads, so a single timed out .deb from the Debian CDN fails
+# the whole build. Older suites go cold in the CDN more often, but any suite can time out.
+RUN echo 'Acquire::Retries "5";' > /etc/apt/apt.conf.d/80-retries
+
 RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y \
         apt-transport-https \
         libfreetype6-dev \

php/php84/Dockerfile

@@ -2,6 +2,10 @@ FROM php:8.4-fpm-bookworm
 
 ARG TIME_ZONE=Pacific/Auckland
 
+# apt does not retry failed downloads, so a single timed out .deb from the Debian CDN fails
+# the whole build. Older suites go cold in the CDN more often, but any suite can time out.
+RUN echo 'Acquire::Retries "5";' > /etc/apt/apt.conf.d/80-retries
+
 RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y \
         apt-transport-https \
         libfreetype6-dev \

php/php85/Dockerfile

@@ -2,6 +2,10 @@ FROM php:8.5.2-fpm-bookworm
 
 ARG TIME_ZONE=Pacific/Auckland
 
+# apt does not retry failed downloads, so a single timed out .deb from the Debian CDN fails
+# the whole build. Older suites go cold in the CDN more often, but any suite can time out.
+RUN echo 'Acquire::Retries "5";' > /etc/apt/apt.conf.d/80-retries
+
 RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y \
         apt-transport-https \
         libfreetype6-dev \