using -g more clearly expresses the intent of setting the primary group for the new user

docker/Dockerfile.go_build

@@ -19,7 +19,7 @@ RUN apk add fuse # for weed mount
 
 # Create non-root user and group
 RUN addgroup -g 1000 seaweed && \
-    adduser -D -u 1000 -G seaweed seaweed
+    adduser -D -u 1000 -g seaweed seaweed
 
 # volume server gprc port
 EXPOSE 18080

docker/Dockerfile.local

@@ -11,7 +11,7 @@ RUN apk add curl # for health checks
 
 # Create non-root user and group
 RUN addgroup -g 1000 seaweed && \
-    adduser -D -u 1000 -G seaweed seaweed
+    adduser -D -u 1000 -g seaweed seaweed
 
 # volume server grpc port
 EXPOSE 18080

docker/Dockerfile.rocksdb_large

@@ -36,7 +36,7 @@ RUN apk add fuse snappy gflags
 
 # Create non-root user and group
 RUN addgroup -g 1000 seaweed && \
-    adduser -D -u 1000 -G seaweed seaweed
+    adduser -D -u 1000 -g seaweed seaweed
 
 # volume server gprc port
 EXPOSE 18080

docker/Dockerfile.rocksdb_large_local

@@ -19,7 +19,7 @@ RUN apk add fuse snappy gflags tmux
 
 # Create non-root user and group
 RUN addgroup -g 1000 seaweed && \
-    adduser -D -u 1000 -G seaweed seaweed
+    adduser -D -u 1000 -g seaweed seaweed
 
 # volume server gprc port
 EXPOSE 18080