From c070a46087e1bdaa4d50d186404134d09f1d3fbc Mon Sep 17 00:00:00 2001
From: Steven Hartland <stevenmhartland@gmail.com>
Date: Thu, 14 Mar 2024 08:55:14 +0000
Subject: [PATCH] chore: add caching to Linux docker run

Add cache mount directives to Linux docker container so that reruns
are much quicker.
---
 linux/Dockerfile | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/linux/Dockerfile b/linux/Dockerfile
index 217be7e..ab24d96 100644
--- a/linux/Dockerfile
+++ b/linux/Dockerfile
@@ -3,19 +3,22 @@
 # -----------
 FROM golang:1.21-alpine3.19 AS build
 
+WORKDIR /app
+
 # Go build env
 ENV CGO_ENABLED=0
 
-WORKDIR /app
-
 # Install source deps
 COPY go.mod go.sum ./
-RUN go mod download
+RUN --mount=type=cache,target=/go/pkg/mod \
+    go mod download
 
 # Copy source & build
-COPY . .
-RUN go build -v -ldflags '-s' -o /bin/ryuk
-RUN chmod +x /bin/ryuk
+COPY --link . .
+
+RUN --mount=type=cache,target=/go/pkg/mod \
+    --mount=type=cache,target=/root/.cache/go-build \
+    go build -ldflags '-s' -o /bin/ryuk
 
 # -----------------
 # Distributed Image