bar

docker-bake.hcl

@@ -10,7 +10,6 @@ target "_common" {
         RUBY_VERSION = "3.4.4"
     }
     platforms = [
-        "linux/amd64",
         "linux/arm64",
     ]
 }

dockerfiles/alpine.Dockerfile

@@ -18,8 +18,14 @@ RUN \
   apk update -q; \
   apk add bash jemalloc
 
+RUN \
+  --mount=type=cache,id=usr-local-bundle-cache-${TARGETARCH},target=${BUNDLE_PATH},sharing=locked \
+  gem install -N bundler
+
 FROM base AS build
 
+ARG TARGETARCH
+
 RUN \
   --mount=type=cache,id=var-cache-apk-${TARGETARCH},target=/var/cache/apk,sharing=locked \
   apk update -q; \

dockerfiles/bookworm.Dockerfile

@@ -23,9 +23,16 @@ RUN \
   apt-get install --yes --no-install-recommends \
   libjemalloc2
 
+RUN \
+  --mount=type=cache,id=usr-local-bundle-cache-${TARGETARCH},target=${BUNDLE_PATH},sharing=locked \
+  gem install -N bundler
+
+ENV DEBIAN_FRONTEND="noninteractive"
 
 FROM base AS build
 
+ARG TARGETARCH
+
 RUN \
   --mount=type=cache,id=var-cache-apt-${TARGETARCH},target=/var/cache/apt,sharing=locked \
   --mount=type=cache,id=var-lib-apt-${TARGETARCH},target=/var/lib/apt,sharing=locked \