chore(deps): update alpine docker tag to v3.20

renovate[bot] · web-flow · commit 1c49c8c0e0d1 · 2024-05-22T21:47:05.000Z
| datasource | package | from | to   |
| ---------- | ------- | ---- | ---- |
| docker     | alpine  | 3.19 | 3.20 |
diff --git a/linux/Dockerfile b/linux/Dockerfile
@@ -1,7 +1,7 @@
 # renovate: datasource=github-releases depName=watchtower lookupName=containrrr/watchtower
 ARG WATCHTOWER_VERSION=1.7.1
 
-FROM alpine:3.19@sha256:c5b1261d6d3e43071626931fc004f70149baeba2c8ec672bd4f27761f8e1ad6b as base
+FROM alpine:3.20@sha256:77726ef6b57ddf65bb551896826ec38bc3e53f75cdde31354fbffb4f25238ebd as base
 
 #=================
 # build
