Update Backdrop, and update the CI Build process!

[Wylbur]

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[github-actions]

Diff for d37558e:

diff --git a/_bashbrew-cat b/_bashbrew-cat
index 439560d..df24abf 100644
--- a/_bashbrew-cat
+++ b/_bashbrew-cat
@@ -1,12 +1,12 @@
-Maintainers: Mike Pirog <mike@kalabox.io> (@pirog), Geoff St. Pierre <serundeputy@gmail.com> (@serundeputy), Jen Lampton <jen+docker@jeneration.com> (@jenlampton), Pol Dellaiera <pol.dellaiera@protonmail.com> (@drupol), Greg Netsas <greg@userfriendly.tech> (@klonos)
+Maintainers: Mike Pirog <mike@kalabox.io> (@pirog), Geoff St. Pierre <serundeputy@gmail.com> (@serundeputy), Jen Lampton <jen+docker@jeneration.com> (@jenlampton), Greg Netsas <greg@userfriendly.tech> (@klonos)
 GitRepo: https://github.com/backdrop-ops/backdrop-docker.git
 
 Tags: 1.17.3, 1.17, 1, 1.17.3-apache, 1.17-apache, 1-apache, apache, latest
 Architectures: amd64, arm64v8
-GitCommit: b760ba970a67f3dcdc975ed8b77f915895184577
+GitCommit: c7e9301fd76e86e4bd7c6747dd51e78bc8400e60
 Directory: 1/apache
 
 Tags: 1.17.3-fpm, 1.17-fpm, 1-fpm, fpm
 Architectures: amd64, arm64v8
-GitCommit: b760ba970a67f3dcdc975ed8b77f915895184577
+GitCommit: c7e9301fd76e86e4bd7c6747dd51e78bc8400e60
 Directory: 1/fpm
diff --git a/backdrop_fpm/Dockerfile b/backdrop_fpm/Dockerfile
index 5147fed..ca1b4eb 100644
--- a/backdrop_fpm/Dockerfile
+++ b/backdrop_fpm/Dockerfile
@@ -1,17 +1,17 @@
 # from https://backdropcms.org/requirements
-FROM php:7.2-fpm
+FROM php:7.4-fpm
 
 # install the PHP extensions we need
-RUN apt-get update && apt-get install -y libpng-dev libjpeg-dev libpq-dev \
+RUN apt-get update && apt-get install -y libzip-dev libonig-dev libpng-dev libjpeg-dev libpq-dev \
 	&& rm -rf /var/lib/apt/lists/* \
-	&& docker-php-ext-configure gd --with-png-dir=/usr --with-jpeg-dir=/usr \
+	&& docker-php-ext-configure gd --with-jpeg=/usr \
 	&& docker-php-ext-install gd mbstring pdo pdo_mysql pdo_pgsql zip
 
 WORKDIR /var/www/html
 
 # https://github.com/backdrop/backdrop/releases
-ENV BACKDROP_VERSION 1.17.3
-ENV BACKDROP_MD5 907ae2978936d525626dd4c981afd0d2
+ENV BACKDROP_VERSION 1.21.3
+ENV BACKDROP_MD5 a93fe043630a617f6ae0977aaae3e919
 
 RUN curl -fSL "https://github.com/backdrop/backdrop/archive/${BACKDROP_VERSION}.tar.gz" -o backdrop.tar.gz \
 	&& echo "${BACKDROP_MD5} *backdrop.tar.gz" | md5sum -c - \
diff --git a/backdrop_latest/Dockerfile b/backdrop_latest/Dockerfile
index 0f437c2..a15d147 100644
--- a/backdrop_latest/Dockerfile
+++ b/backdrop_latest/Dockerfile
@@ -1,19 +1,19 @@
 # from https://backdropcms.org/requirements
-FROM php:7.2-apache
+FROM php:7.4-apache
 
 RUN a2enmod rewrite
 
 # install the PHP extensions we need
-RUN apt-get update && apt-get install -y libpng-dev libjpeg-dev libpq-dev \
+RUN apt-get update && apt-get install -y libzip-dev libonig-dev libpng-dev libjpeg-dev libpq-dev \
 	&& rm -rf /var/lib/apt/lists/* \
-	&& docker-php-ext-configure gd --with-png-dir=/usr --with-jpeg-dir=/usr \
+	&& docker-php-ext-configure gd --with-jpeg=/usr \
 	&& docker-php-ext-install gd mbstring pdo pdo_mysql pdo_pgsql zip
 
 WORKDIR /var/www/html
 
 # https://github.com/backdrop/backdrop/releases
-ENV BACKDROP_VERSION 1.17.3
-ENV BACKDROP_MD5 907ae2978936d525626dd4c981afd0d2
+ENV BACKDROP_VERSION 1.21.3
+ENV BACKDROP_MD5 a93fe043630a617f6ae0977aaae3e919
 
 RUN curl -fSL "https://github.com/backdrop/backdrop/archive/${BACKDROP_VERSION}.tar.gz" -o backdrop.tar.gz \
   && echo "${BACKDROP_MD5} *backdrop.tar.gz" | md5sum -c - \

Relevant Maintainers:

• backdrop: @pirog @serundeputy @jenlampton @drupol @klonos