Maybe it is the scope?

.github/workflows/deploy.yml

@@ -30,4 +30,4 @@ jobs:
         run: earthly --version
 
       - name: Run build
-        run: earthly --ci --push +docker
+        run: earthly --ci --push +docker --repo ghcr.io/elliotwutingfeng/tokei_rs

Earthfile

@@ -3,26 +3,30 @@ FROM rust:latest
 WORKDIR /tokei_rs
 
 install-chef:
+    ARG repo
     RUN cargo install cargo-chef
-    SAVE IMAGE --push ghcr.io/elliotwutingfeng/tokei_rs/cache/install-chef
+    SAVE IMAGE --push $repo/cache/install-chef
 
 prepare:
+    ARG repo
     FROM +install-chef
     COPY --dir . .
     RUN cargo chef prepare --recipe-path recipe.json
     SAVE ARTIFACT recipe.json
-    SAVE IMAGE --push ghcr.io/elliotwutingfeng/tokei_rs/cache/prepare
+    SAVE IMAGE --push $repo/cache/prepare
 
 build-deps:
+    ARG repo
     FROM +install-chef
     COPY +prepare/recipe.json ./
 
     # build dependencies as separate layer to be cached
     RUN cargo chef cook --release --recipe-path recipe.json
 
-    SAVE IMAGE --push ghcr.io/elliotwutingfeng/tokei_rs/cache/deps
+    SAVE IMAGE --push $repo/cache/deps
 
 build:
+    ARG repo
     FROM +build-deps
 
     # copy project
@@ -32,22 +36,24 @@ build:
     RUN cargo build --release
 
     SAVE ARTIFACT target/release/tokei_rs tokei_rs
-    SAVE IMAGE --push ghcr.io/elliotwutingfeng/tokei_rs/cache/build
+    SAVE IMAGE --push $repo/cache/build
 
 docker:
+    ARG repo
     FROM ubuntu:jammy
     EXPOSE 8000
     COPY +build/tokei_rs tokei_rs
     RUN apt-get update && apt-get upgrade -y && apt-get install -y git
     ENTRYPOINT ["./tokei_rs"]
-    SAVE IMAGE --push ghcr.io/elliotwutingfeng/tokei_rs
+    SAVE IMAGE --push $repo
 
 compose:
+    ARG repo
     FROM earthly/dind:alpine
     WORKDIR /test
     COPY compose.yml ./
     WITH DOCKER \
             --compose compose.yml \
-            --load ghcr.io/elliotwutingfeng/tokei_rs:latest(+docker)
+            --load $repo:latest(+docker)
         RUN docker compose down && docker compose up --remove-orphans
     END