Update Node.js to v18

renovate[bot] · web-flow · commit 7a5beac5243b · 2022-06-20T10:00:36.000Z
diff --git a/Dockerfile b/Dockerfile
@@ -1,4 +1,4 @@
-FROM node:12-alpine
+FROM node:18-alpine
 
 ARG JSONLINT_VERSION
 ENV npm_config_loglevel=silent

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-FROM node:12-alpine`
	`1`	`+FROM node:18-alpine`
`2`	`2`
`3`	`3`	`ARG JSONLINT_VERSION`
`4`	`4`	`ENV npm_config_loglevel=silent`