diff --git a/obsidian/config/git-push-pull.txt b/obsidian/config/git-push-pull.txt
new file mode 100644
index 0000000..670a2e7
--- /dev/null
+++ b/obsidian/config/git-push-pull.txt
@@ -0,0 +1 @@
+acae951299dd5b186af1e560916a2f7960ab8d3d
\ No newline at end of file
diff --git a/obsidian/scripts/update-and-install.sh b/obsidian/scripts/update-and-install.sh
index c79ad29..86f0ac7 100644
--- a/obsidian/scripts/update-and-install.sh
+++ b/obsidian/scripts/update-and-install.sh
@@ -1,5 +1,15 @@
 #!/bin/ash
 
+# update docker key
+sudo apt-get install ca-certificates curl
+sudo install -m 0755 -d /etc/apt/keyrings
+sudo curl -fsSL https://download.docker.com/linux/debian/gpg -o /etc/apt/keyrings/docker.asc
+sudo chmod a+r /etc/apt/keyrings/docker.asc
+echo \
+  "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] https://download.docker.com/linux/debian \
+  $(. /etc/os-release && echo "$VERSION_CODENAME") stable" | \
+  sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
+
 apt-get update
 apt-get install -y nano