Add Docker setup with SMTP mail and logging

docker-entrypoint.sh

@@ -0,0 +1,26 @@
+#!/bin/sh
+set -e
+
+# If SMTP vars are provided, write an msmtp config for authenticated SMTP
+if [ -n "${SMTP_HOST:-}" ]; then
+  : "${SMTP_PORT:=587}"
+  : "${SMTP_FROM:=noreply@example.com}"
+  : "${SMTP_TLS:=on}"
+
+  cat > /etc/msmtprc <<EOF
+account default
+host ${SMTP_HOST}
+port ${SMTP_PORT}
+from ${SMTP_FROM}
+auth on
+user ${SMTP_USER:-}
+password ${SMTP_PASSWORD:-}
+tls ${SMTP_TLS}
+tls_trust_file /etc/ssl/certs/ca-certificates.crt
+logfile /var/log/msmtp.log
+EOF
+
+  chmod 600 /etc/msmtprc
+fi
+
+exec docker-php-entrypoint "$@"