From 6d652fc38cf0a75c2b10b54b681d37b6dd8ae7af Mon Sep 17 00:00:00 2001
From: Vivek <vivek@revankar.net>
Date: Sun, 12 Mar 2023 23:36:25 -0700
Subject: [PATCH] optimize arm dockerfile

---
 Dockerfile.arm | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Dockerfile.arm b/Dockerfile.arm
index 098bf13..ea849b4 100644
--- a/Dockerfile.arm
+++ b/Dockerfile.arm
@@ -7,6 +7,10 @@ RUN apk add --no-cache g++ git
 
 WORKDIR /usr/src/libreddit
 
+# cache dependencies in their own layer
+COPY Cargo.lock Cargo.toml .
+RUN mkdir src && echo "fn main() {}" > src/main.rs && cargo install --config net.git-fetch-with-cli=true --path . && rm -rf ./src
+
 COPY . .
 
 # net.git-fetch-with-cli is specified in order to prevent a potential OOM kill