Merge pull request #242 from linuxserver/code-server-shellcheck-apt

standardize apt-get

root/etc/cont-init.d/95-apt-get

@@ -0,0 +1,3 @@
+#!/usr/bin/with-contenv bash
+
+apt-get update

root/etc/cont-init.d/98-shellcheck

@@ -1,5 +1,5 @@
 #!/usr/bin/with-contenv bash
 
 echo "**** installing shellcheck ****"
-apt-get update && apt-get install -y \
-  shellcheck
+apt-get install -y \
+    shellcheck