tweak build-image.yml: simplify build

.dockerignore

@@ -1,6 +1,9 @@
+.DS_Store
 /.fleet
+/.github
 /.idea
 /.run
 /elf
 /target
 /tmp
+Dockerfile

.github/workflows/build-image.yml

@@ -2,7 +2,7 @@ name: Create and publish a Docker image
 
 on:
   push:
-    branches: ['release']
+    branches: ['release', 'test']
     tags: ['v*']
 
 # Defines two custom environment variables for the workflow. These are used for the Container registry domain, and a name for the Docker image that this workflow builds.
@@ -20,10 +20,6 @@ jobs:
       packages: write
       #
     steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
-      - name: Set up QEMU
-        uses: docker/setup-qemu-action@v3
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
       # Uses the `docker/login-action` action to log in to the Container registry using the account and password that will publish the packages. Once published, the packages are scoped to the account defined here.
@@ -46,10 +42,9 @@ jobs:
       # It uses the `context` parameter to define the build's context as the set of files located in the specified path. For more information, see "[Usage](https://github.com/docker/build-push-action#usage)" in the README of the `docker/build-push-action` repository.
       # It uses the `tags` and `labels` parameters to tag and label the image with the output from the "meta" step.
       - name: Build and push Docker image
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
-          context: .
-          platforms: linux/amd64,linux/arm64
+          platforms: linux/amd64
           push: true
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}

.gitignore

@@ -1,5 +1,6 @@
-/target
+.DS_Store
 /.idea
-/elf/
-/tmp/
-
+/.run
+/elf
+/target
+/tmp

Dockerfile

@@ -1,12 +1,10 @@
 FROM rust:alpine AS base
-RUN apk add --no-cache musl-dev openssl-dev pkgconfig openssl-libs-static
+RUN apk add --no-cache musl-dev openssl-dev openssl-libs-static pkgconfig
+WORKDIR /app
 
 FROM base AS builder
-WORKDIR /app
 COPY . .
-RUN --mount=type=cache,target=/app/target \
-    --mount=type=cache,from=base,source=/usr/local/rustup,target=/usr/local/rustup \
-    cargo install --locked --path .
+RUN cargo install --locked --path . --bin charms
 
 FROM alpine AS runtime
 COPY --from=builder /usr/local/cargo/bin/charms /usr/local/bin