Docker Registry Mirrors Not Working with Encore Build

[inter0925]

Issue: Docker Registry Mirrors Not Working with Encore Build

Problem Description

When building Docker images with Encore, the build process ignores the local Docker daemon's registry-mirrors configuration. This causes issues in regions where direct access to Docker Hub is restricted or unstable.

Current Behavior

• docker pull node:slim works fine with configured registry-mirrors in daemon.json
• encore build docker attempts to connect directly to index.docker.io, resulting in timeout errors

Error Message

encore build docker --config ./infra-config.json url-short:v1.0 5:28PM INF compiling Encore application for linux/amd64 5:28PM INF resolving base image node:slim 5:28PM INF could not get image from local daemon, fetching it remotely 5:28PM ERR resolve base image: unable to fetch image: Get "https://index.docker.io/v2/": dial tcp 108.160.170.45:443: i/o timeout

Expected Behavior

Encore should either:

1. Use the local Docker daemon's registry-mirrors configuration, or
2. Provide a way to configure registry mirrors in infra-config.json or through environment variables

Question

Is there a way to configure registry mirrors for Encore's Docker build process? This is crucial for users in regions where direct access to Docker Hub is restricted.