Pull in composer dependencies before running make tests

This is because Makefiles implicitly depend on a distributed
tarball (or initialized maintainer/inplace install).
Running `make dist` would be a bit too much, so take this
shortcut.

.github/jobs/configure-checks/all.bats

@@ -37,7 +37,7 @@ setup() {
     if [ "$distro_id" = "ID=fedora" ]; then
         repo-install httpd
     fi
-    repo-install gcc g++ libcgroup-dev composer
+    repo-install gcc g++ libcgroup-dev
 }
 
 run_configure () {

.github/jobs/configure-checks/setup_configure_image.sh

@@ -7,16 +7,24 @@ distro_id=$(grep "^ID=" /etc/os-release)
 # Install everything for configure and testing
 case $distro_id in
     "ID=fedora")
-        dnf install pkg-config make bats autoconf automake util-linux -y ;;
+        dnf install -y pkg-config make bats autoconf automake util-linux composer \
+            php-gd php-cli php-intl php-mbstring php-mysqlnd php-fpm \
+            php-xml php-zip
+		;;
     *)
         apt-get update; apt-get full-upgrade -y
-        apt-get install pkg-config make bats autoconf -y ;;
+        apt-get install -y pkg-config make bats autoconf composer \
+            php-fpm php-gd php-cli php-intl php-mbstring php-mysql \
+            php-curl php-json php-xml php-zip
+		;;
 esac
 
-# Build the configure file
-make configure
+# Start from a configured, distribution-ready source tree. Ideally,
+# we'd like to call `make dist` but that depends on LaTeX for building
+# the documentation, so take a shortcut.
+make configure composer-dependencies
 
-# Install extra assert statements for bots
+# Install extra assert statements for bats
 cp submit/assert.bash .github/jobs/configure-checks/
 
 # Run the configure tests for this usecase