diff --git a/scripts/docker_start.sh b/scripts/docker_start.sh
index 186bdbd..ab021d2 100644
--- a/scripts/docker_start.sh
+++ b/scripts/docker_start.sh
@@ -55,9 +55,9 @@ docker run \
     -e "RABBITMQ_HOST=rabbitmq" \
     -e "ZULIP_USER_EMAIL=example@example.com" \
     -e "ZULIP_USER_DOMAIN=example.com" \
-    -e "ZULIP_AUTH_BACKENDS_EmailAuthBackend=EmailAuthBackend" \
+    -e "ZULIP_AUTH_BACKENDS=EmailAuthBackend" \
     -e "ZULIP_SECRETS_email_password=12345" \
-    -e "ZULIP_SECRETS_RABBITMQ_PASS=zulip" \
+    -e "ZULIP_SECRETS_rabbitmq_password=zulip" \
     -e "ZULIP_SETTINGS_EXTERNAL_HOST=example.com" \
     -e "ZULIP_SETTINGS_ZULIP_ADMINISTRATOR=admin@example.com" \
     -e "ZULIP_SETTINGS_ADMIN_DOMAIN=example.com" \
diff --git a/scripts/generate_certs.sh b/scripts/generate_certs.sh
deleted file mode 100755
index 227999f..0000000
--- a/scripts/generate_certs.sh
+++ /dev/null
@@ -1,13 +0,0 @@
-#!/bin/bash
-
-command -v openssl >/dev/null 2>&1 || { echo >&2 "openssl package not installed.  Aborting."; exit 1; }
-
-openssl genrsa -des3 -passout pass:x -out server.pass.key 4096
-openssl rsa -passin pass:x -in server.pass.key -out zulip.key
-rm -f server.pass.key
-openssl req -new -key zulip.key -out server.csr
-openssl x509 -req -days 365 -in server.csr -signkey zulip.key -out zulip.combined-chain.crt
-rm -f server.csr
-echo "Copy the following files to the docker-zulip data folder:"
-echo "* zulip.key"
-echo "* zulip.combined-chain.crt"