Update dev to use `main` branch rather than master (#195)
diff --git a/dev-cluster/Dockerfile b/dev-cluster/Dockerfile
index 70e3bfb..62883f2 100644
--- a/dev-cluster/Dockerfile
+++ b/dev-cluster/Dockerfile
@@ -108,7 +108,7 @@
WORKDIR /usr/src/couchdb
RUN ./configure -c --spidermonkey-version 60
-ARG checkout_branch=master
+ARG checkout_branch=main
ARG configure_options="-c --spidermonkey-version 60"
WORKDIR /usr/src/couchdb/
diff --git a/dev/Dockerfile b/dev/Dockerfile
index a32bb34..782d233 100644
--- a/dev/Dockerfile
+++ b/dev/Dockerfile
@@ -125,10 +125,10 @@
# This layer performs the actual build of a relocatable, self-contained
# release of CouchDB. It pulls down the latest changes from the remote
# origin (because the layer above will be cached) and switches to the
-# branch specified in the build_arg (defaults to master)
+# branch specified in the build_arg (defaults to main)
FROM build_dependencies AS build
-ARG checkout_branch=master
+ARG checkout_branch=main
ARG configure_options
ARG spidermonkey_version=60
