I suppose?

.gitea/workflows/build.yml

@@ -31,7 +31,25 @@ jobs:
         id: restore-cache
         with:
           path: /tmp/.buildx-cache
-          key: docker-buildx-kon
+          key: docker-buildx-kon-
+
+      - name: Cache cargo registry
+        uses: actions/cache@704facf57e6136b1bc63b828d79edcd491f0ee84 # v3
+        with:
+          path: ~/.cargo/registry
+          key: ${{ runner.os }}-cargo-registry-${{ hashFiles('**/Cargo.lock') }}
+
+      - name: Cache cargo index
+        uses: actions/cache@704facf57e6136b1bc63b828d79edcd491f0ee84 # v3
+        with:
+          path: ~/.cargo/git
+          key: ${{ runner.os }}-cargo-git-${{ hashFiles('**/Cargo.lock') }}
+
+      - name: Cache cargo build
+        uses: actions/cache@704facf57e6136b1bc63b828d79edcd491f0ee84 # v3
+        with:
+          path: target
+          key: ${{ runner.os }}-cargo-build-target-${{ hashFiles('**/Cargo.lock') }}
 
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@f95db51fddba0c2d1ec667646a06c2ce06100226 # v3
@@ -49,4 +67,4 @@ jobs:
         id: cache
         with:
           path: /tmp/.buildx-cache
-          key: docker-buildx-kon
+          key: docker-buildx-kon-${{ github.sha }}

.gitea/workflows/cache.yml

@@ -1,31 +0,0 @@
-name: Cache Rust dependencies
-on:
-  push:
-    branches:
-      - master
-jobs:
-  build:
-    runs-on: ubuntu-22.04-node
-    steps:
-    - uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5 # v2
-
-    - name: Cache cargo registry
-      uses: actions/cache@704facf57e6136b1bc63b828d79edcd491f0ee84 # v3
-      with:
-        path: ~/.cargo/registry
-        key: ${{ runner.os }}-cargo-registry-${{ hashFiles('**/Cargo.lock') }}
-
-    - name: Cache cargo index
-      uses: actions/cache@704facf57e6136b1bc63b828d79edcd491f0ee84 # v3
-      with:
-        path: ~/.cargo/git
-        key: ${{ runner.os }}-cargo-git-${{ hashFiles('**/Cargo.lock') }}
-
-    - name: Cache cargo build
-      uses: actions/cache@704facf57e6136b1bc63b828d79edcd491f0ee84 # v3
-      with:
-        path: target
-        key: ${{ runner.os }}-cargo-build-target-${{ hashFiles('**/Cargo.lock') }}
-
-    - name: Build
-      run: cargo build -r --verbose

Dockerfile

@@ -2,10 +2,8 @@ FROM rust:1.75-alpine3.19@sha256:8eaab14d138f0d61240da09aeadb87fcd9c2593975b8852
 ENV RUSTFLAGS="-C target-feature=-crt-static"
 RUN apk add --no-cache openssl-dev musl-dev 
 WORKDIR /usr/src/kon
-COPY Cargo.toml Cargo.lock ./
-RUN mkdir src && echo "fn main() {}" > src/main.rs && cargo build -r && rm -rf src
 COPY . .
-RUN --mount=type=cache,target=/tmp/.buildx-cache/kon-cargo cargo fetch && cargo build -r
+RUN cargo fetch && cargo build -r
 
 FROM alpine:3.19@sha256:51b67269f354137895d43f3b3d810bfacd3945438e94dc5ac55fdac340352f48
 RUN apk add --no-cache openssl-dev libgcc