Deploy images to kostersitz.com.

To manage deploy secrets in GitHub, go to the repository page, click
Settings, then Environments, then Deploy, then scroll down to
Environment secrets.

build/deploy-ftp.sh

@@ -0,0 +1,30 @@
+#!/bin/sh
+
+set -e
+
+HOST="hactrn.kostersitz.com"
+USER="hactrn@kostersitz.com"
+DIR="images"
+NETRC="$HOME/.netrc"
+
+if test -z "$FTP_SECRET"; then
+    echo 'ERROR: No password in $FTP_SECRET.'
+    exit 1
+fi
+
+echo "machine $HOST"         > "$NETRC"
+echo "login $USER"          >> "$NETRC"
+echo "password $FTP_SECRET" >> "$NETRC"
+chmod 600 "$NETRC"
+
+echo "Deploying to $USER@$HOST"
+
+ftp "$HOST" <<EOF
+type image
+cd $DIR
+lcd out
+put $EMULATOR.tgz
+bye
+EOF
+
+exit 0