diff --git a/docker/mainnet/Dockerfile b/docker/mainnet/Dockerfile
index b3de86a..b95ae1f 100644
--- a/docker/mainnet/Dockerfile
+++ b/docker/mainnet/Dockerfile
@@ -47,6 +47,7 @@ USER safeuser
 WORKDIR /home/safeuser
 RUN git clone https://github.com/Permissionless-Software-Foundation/bch-api
 WORKDIR /home/safeuser/bch-api
+RUN git checkout ct-unstable
 RUN npm install --silent
 
 # Generate documentation
diff --git a/docker/mainnet/cleanup-images.sh b/docker/mainnet/cleanup-images.sh
new file mode 100755
index 0000000..405d9f5
--- /dev/null
+++ b/docker/mainnet/cleanup-images.sh
@@ -0,0 +1,5 @@
+#!/bin/bash
+
+# Remove all untagged docker images.
+docker rmi $(docker images | grep "^<none>" | awk '{print $3}')
+
diff --git a/docker/mainnet/start-local-mainnet.sh b/docker/mainnet/start-local-mainnet.sh
index 13d3636..5014d14 100755
--- a/docker/mainnet/start-local-mainnet.sh
+++ b/docker/mainnet/start-local-mainnet.sh
@@ -40,7 +40,7 @@ export REDIS_HOST=172.17.0.1
 export TOKENSECRET=somelongsecretvalue
 
 # So that bch-api can call bch-js locally.
-export LOCAL_RESTURL=http://127.0.0.1:3000/v4/
+export LOCAL_RESTURL=http://127.0.0.1:3000/v5/
 
 # Basic Authentication password
 export PRO_PASS=somerandomepassword:someotherrandompassword:aThirdPassword
@@ -65,6 +65,11 @@ export LOG_MAX_SIZE=1m
 #5d means store no more than 5 days
 export LOG_MAX_FILES=5d
 
+# (Optional) bcash full node
 export BCASH_SERVER=http://localhost:3002/
 
+# psf-slp-indexer
+#export SLP_INDEXER_API=https://psf-slp-indexer.fullstack.cash/
+export SLP_INDEXER_API=http://172.17.0.1:5010/
+
 npm start