backward compatibility: use default UID=1000 GID=1000 (#4702)

* backward compatibility: use default UID=1000 GID=1000

* backward compatibility: use default UID=1000 GID=1000

.env.example

@@ -2,5 +2,5 @@
 ERIGON_USER=erigon
 
 # UID, GID of user inside docker process which must exist also on host OS
-DOCKER_UID=3473     # random number [1001, 10000] chosen arbitrarily for example
-DOCKER_GID=3473     # can choose any valid #. 1000 tends to be taken by first user
+DOCKER_UID=1000     # random number [1001, 10000] chosen arbitrarily for example
+DOCKER_GID=1000     # can choose any valid #. 1000 tends to be taken by first user

docker-compose.yml

@@ -25,11 +25,11 @@ services:
   erigon:
     image: thorax/erigon:${TAG:-latest}
     build:
-        args:
-            UID: ${DOCKER_UID}
-            GID: ${DOCKER_GID}
-        context: .
-    user: "${DOCKER_UID}:${DOCKER_GID}"
+      args:
+        UID: ${DOCKER_UID:1000}
+        GID: ${DOCKER_GID:1000}
+      context: .
+    user: "${DOCKER_UID:1000}:${DOCKER_GID:1000}"
     command: |
       erigon ${ERIGON_FLAGS-} --private.api.addr=0.0.0.0:9090
       --sentry.api.addr=sentry:9091 --downloader.api.addr=downloader:9093 --txpool.disable
@@ -67,7 +67,7 @@ services:
 
   prometheus:
     image: prom/prometheus:v2.36.2
-    user: ${DOCKER_UID}:${DOCKER_GID} # Uses erigon user from Dockerfile
+    user: ${DOCKER_UID:1000}:${DOCKER_GID:1000} # Uses erigon user from Dockerfile
     command: --log.level=warn --config.file=/etc/prometheus/prometheus.yml --storage.tsdb.path=/prometheus --storage.tsdb.retention.time=150d --web.console.libraries=/usr/share/prometheus/console_libraries --web.console.templates=/usr/share/prometheus/consoles
     ports: [ "9090:9090" ]
     volumes: