[feature] Configurable timezone in containers (#2046)

Dockerfile

@@ -21,6 +21,8 @@ RUN yarn install --cwd web/source && \
 
 # stage 3: build the executor container
 FROM --platform=${TARGETPLATFORM} alpine:3.17.2 as executor
+RUN apk add --no-cache tzdata
+ENV TZ="UTC"
 
 # switch to non-root user:group for GtS
 USER 1000:1000

example/docker-compose/docker-compose.yaml

@@ -13,6 +13,7 @@ services:
       GTS_DB_ADDRESS: /gotosocial/storage/sqlite.db
       GTS_LETSENCRYPT_ENABLED: "false"
       GTS_LETSENCRYPT_EMAIL_ADDRESS: ""
+      #TZ: "UTC"
       ## For reverse proxy setups:
       # GTS_TRUSTED_PROXIES: "172.x.x.x"
     ports:
@@ -23,6 +24,8 @@ services:
       #- "127.0.0.1:8080:8080"
     volumes:
       - ~/gotosocial/data:/gotosocial/storage
+      #- /etc/localtime:/etc/localtime:ro
+      #- /etc/timezone:/etc/timezone:ro
     restart: "always"
 
 networks: