Don't accidentally swallow script errors (#1052)

* Don't accidentally swallow script errors

* add docs

docker-compose.prod.yml

@@ -25,6 +25,8 @@ services:
     ports:
       - 80:80
       - 443:443
+        # See Caddy's documentation for customizing this line
+        # https://caddyserver.com/docs/quick-starts/reverse-proxy
     command: caddy reverse-proxy --to firezone:13000 --from ${EXTERNAL_URL:?err} ${CADDY_OPTS}
     deploy:
       <<: *default-deploy

scripts/install.sh

@@ -13,13 +13,14 @@ dockerCheck () {
     dc="docker compose"
   fi
 
-
+  set +e
   $dc version | grep -q "v2"
   if [ $? -ne 0 ]; then
     echo "Error: Automatic installation is only supported with Docker Compose version 2 or higher."
     echo "Please upgrade Docker Compose or use the manual installation method: https://docs.firezone.dev/deploy/docker"
     exit 1
   fi
+  set -e
 }
 
 curlCheck () { if ! type curl > /dev/null; then