diff --git a/Development-Side-Notes.md b/Development-Side-Notes.md
index 5131219..c2286d5 100644
--- a/Development-Side-Notes.md
+++ b/Development-Side-Notes.md
@@ -1,4 +1,5 @@
 Just a note for some traps and useful things for development.
 
-- node-bullseye image is not working on Raspberry Pi (armv7), need to downgrade to node-buster
-- node-alpine3.13 image is not working on Raspberry Pi (armv7), need to downgrade to alpine 3.12
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+- node-bullseye image is not working on Raspberry Pi (armv7), need to downgrade to node-buster.
+- node-alpine3.13 image is not working on Raspberry Pi (armv7), need to downgrade to alpine 3.12.
+- docker-alpine's dns is actually not stable in some systems.
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