Explicitely define image sources in Dockerfile (#21)

* Explicitely define image sources

Explicitely refering to docker.io will make the build succeed on software such as podman which does not default to docker.io as the standard image source

* Dockerfiles: use the full legal docker.io/library name just in case

Signed-off-by: Xe Iaso <me@xeiaso.net>

* update CHANGELOG

Signed-off-by: Xe Iaso <me@xeiaso.net>

---------

Signed-off-by: Xe Iaso <me@xeiaso.net>
Co-authored-by: Xe Iaso <me@xeiaso.net>

Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.24 AS build
+FROM docker.io/library/golang:1.24 AS build
 ARG BUILDKIT_SBOM_SCAN_CONTEXT=true BUILDKIT_SBOM_SCAN_STAGE=true
 
 WORKDIR /app
@@ -10,7 +10,7 @@ RUN --mount=type=cache,target=/root/.cache \
   VERSION=$(git describe --tags --always --dirty) \
   && go build -o /app/bin/anubis -ldflags="-X github.com/TecharoHQ/anubis.Version=${VERSION}" ./cmd/anubis
 
-FROM debian:bookworm AS runtime
+FROM docker.io/library/debian:bookworm AS runtime
 ARG BUILDKIT_SBOM_SCAN_STAGE=true
 RUN apt-get update \
   && apt-get -y install ca-certificates

docs/Dockerfile

@@ -1,10 +1,10 @@
-FROM node AS build
+FROM docker.io/library/node AS build
 
 WORKDIR /app
 COPY . .
 
 RUN npm ci && npm run build
 
-FROM nginx:alpine
+FROM docker.io/library/nginx:alpine
 COPY --from=build /app/build /usr/share/nginx/html
 LABEL org.opencontainers.image.source="https://github.com/TecharoHQ/anubis"

docs/docs/CHANGELOG.md

@@ -11,6 +11,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+- Docker images now explicitly call `docker.io/library/<thing>` to increase compatibility with Podman et. al
+  [#21](https://github.com/TecharoHQ/anubis/pull/21)
 - Don't overflow the image when browser windows are small (eg. on phones)
   [#27](https://github.com/TecharoHQ/anubis/pull/27)
 - Lower the default difficulty to 4 from 5