Fully qualify image sources

app/Dockerfile

@@ -1,4 +1,4 @@
-FROM alpine:3.16
+FROM docker.io/alpine:3.16
 EXPOSE 9000/tcp
 
 ENV SCRIPT_ROOT=/opt/tt-rss

docker-compose.yml

@@ -2,7 +2,7 @@ version: '3'
 
 services:
   db:
-    image: postgres:12-alpine
+    image: docker.io/postgres:12-alpine
     restart: unless-stopped
     environment:
       - POSTGRES_USER=${TTRSS_DB_USER}

web-nginx/Dockerfile

@@ -1,4 +1,4 @@
-FROM nginx:alpine
+FROM docker.io/nginx:alpine
 
 HEALTHCHECK CMD curl --fail http://localhost/tt-rss/index.php || exit 1