ghost: ability to provide a custom mail name

ghost/Dockerfile

@@ -15,6 +15,8 @@ ENV GHOST_NODE_VERSION_CHECK=false \
     SMTP_PASS=12345 \
     SMTP_USER=user \
     SMTP_PORT=666 \
+    SMTP_SENDER_MAIL=user@domain.tld \
+    SMTP_SENDER_NAME=Ghost \
     ENABLE_ISSO=False \
     ISSO_HOST=isso.domain.tld \
     ISSO_AVATAR=false \

ghost/run.sh

@@ -15,7 +15,9 @@ if [ "$CUSTOM_SMTP" == "True" ]; then
     sed -i -e "s/<HOST>/$SMTP_HOST/g" \
            -e "s/<PORT>/$SMTP_PORT/g" \
            -e "s/<USER>/$SMTP_USER/g" \
-           -e "s/<PASS>/$SMTP_PASS/g" /ghost/config.js
+           -e "s/<PASS>/$SMTP_PASS/g" \
+           -e "s/<SENDER_MAIL>/$SMTP_SENDER_MAIL/g" \
+           -e "s/<SENDER_NAME>/$SMTP_SENDER_NAME/g" /ghost/config.js
 fi
 
 if [ ! -d /ghost/content/themes/casper ]; then

ghost/smtp.conf

@@ -1,6 +1,7 @@
         
         mail: {
             transport: 'SMTP',
+            from: '"<SENDER_NAME>" <<SENDER_MAIL>>',
             options: {
                 host: '<HOST>',
                 port: '<PORT>',