From 2bef46ea1b2a4719d89f94bc7f377d43ad7b58de Mon Sep 17 00:00:00 2001
From: Ryan Cavicchioni <ryan@cavi.cc>
Date: Mon, 5 May 2025 22:51:18 -0500
Subject: [PATCH] use Docker cache mount for apk

---
 dockerfiles/alpine.Dockerfile | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/dockerfiles/alpine.Dockerfile b/dockerfiles/alpine.Dockerfile
index 08f35ef..05bc863 100644
--- a/dockerfiles/alpine.Dockerfile
+++ b/dockerfiles/alpine.Dockerfile
@@ -10,11 +10,10 @@ ENV RACK_ENV="production" \
 
 WORKDIR /kubernaut
 
-RUN <<EOT
-  apk update -q
+RUN \
+  --mount=type=cache,id=var-cache-apk,target=/var/cache/apk,sharing=locked \
+  apk update -q; \
   apk add bash jemalloc
-  rm -rf /var/cache/apk
-EOT
 
 RUN \
   --mount=type=cache,id=usr-local-bundle-cache,target=${BUNDLE_PATH},sharing=locked \
@@ -23,10 +22,11 @@ RUN \
 
 FROM base AS build
 
-RUN <<EOT
-  apk add musl-dev gcc make
-  rm -rf /var/cache/apk
-EOT
+RUN \
+  --mount=type=cache,id=var-cache-apk,target=/var/cache/apk,sharing=locked \
+  apk update -q; \
+  apk add musl-dev gcc make; \
+  apk add bash jemalloc
 
 COPY Gemfile Gemfile.lock ./