Flutter channel beta (#519)

diff --git a/Dockerfile b/Dockerfile
index 1b39227..1659db4 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -6,7 +6,7 @@
 # To retrieve this value, please run the following in your closest shell:
 #
 # $ (cd flutter && git rev-parse HEAD)
-ARG FLUTTER_COMMIT=e0c63cd35e15e407a80dc44281cc392535fcce25
+ARG FLUTTER_COMMIT=0da1ab09224f6c6d69fcff1195a3662fe7ad7534
 
 # We install unzip and remove the apt-index again to keep the
 # docker image diff small.
diff --git a/Dockerfile.cloud_run b/cloud_run.Dockerfile
similarity index 96%
rename from Dockerfile.cloud_run
rename to cloud_run.Dockerfile
index fa6387a..fff0b64 100644
--- a/Dockerfile.cloud_run
+++ b/cloud_run.Dockerfile
@@ -6,7 +6,7 @@
 # To retrieve this value, please run the following in your closest shell:
 #
 # $ (cd flutter && git rev-parse HEAD)
-ARG FLUTTER_COMMIT=e0c63cd35e15e407a80dc44281cc392535fcce25
+ARG FLUTTER_COMMIT=0da1ab09224f6c6d69fcff1195a3662fe7ad7534
 
 # We install unzip and remove the apt-index again to keep the
 # docker image diff small.
diff --git a/flutter b/flutter
index e0c63cd..0da1ab0 160000
--- a/flutter
+++ b/flutter
@@ -1 +1 @@
-Subproject commit e0c63cd35e15e407a80dc44281cc392535fcce25
+Subproject commit 0da1ab09224f6c6d69fcff1195a3662fe7ad7534