Update tests and docker to Node 20 LTS (#6204)

.circleci/config.yml

@@ -3,7 +3,7 @@ version: 2.1
 defaults: &defaults
   working_directory: ~/outline
   docker:
-    - image: cimg/node:18.12
+    - image: cimg/node:20.10
     - image: cimg/redis:5.0
     - image: cimg/postgres:14.2
       environment:

Dockerfile

@@ -5,7 +5,7 @@ ARG APP_PATH
 WORKDIR $APP_PATH
 
 # ---
-FROM node:18-alpine AS runner
+FROM node:20-alpine AS runner
 
 RUN apk update && apk add --no-cache curl && apk add --no-cache ca-certificates
 

Dockerfile.base

@@ -1,5 +1,5 @@
 ARG APP_PATH=/opt/outline
-FROM node:18-alpine AS deps
+FROM node:20-alpine AS deps
 
 ARG APP_PATH
 WORKDIR $APP_PATH