From 61bb77225348bf43bccd97e33665290d946a7b61 Mon Sep 17 00:00:00 2001
From: Isis Ebsen <root@5ht2.me>
Date: Thu, 24 Aug 2023 20:05:36 +0530
Subject: [PATCH] make image (much) smaller

This commit just makes use of docker multi-stage builds. Since Go
links *everything* statically, and we only need `libc` at runtime,
and not the plethora of tools in the Go base image, we run from a
distroless image with just the binary and the static assets.
---
 Dockerfile | 13 ++++++++-----
 Makefile   |  9 +--------
 2 files changed, 9 insertions(+), 13 deletions(-)

diff --git a/Dockerfile b/Dockerfile
index 99daf85..540e3ed 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,11 +1,14 @@
-FROM golang:1.17.6
+FROM golang:1.17.6 as build
 ARG COMMIT="latest"
-
-RUN mkdir -p /heartbeat/config
-ADD . /heartbeat
 WORKDIR /heartbeat
+RUN mkdir -p /heartbeat/config
+COPY . .
 
 ENV PATH "${PATH}:${GOPATH}/bin"
 RUN make deps build
 
-CMD /heartbeat/heartbeat
+FROM gcr.io/distroless/base-debian11
+COPY --from=build /heartbeat/heartbeat /heartbeat/heartbeat
+COPY --from=build /heartbeat/www /heartbeat/www
+WORKDIR /heartbeat
+ENTRYPOINT [ "/heartbeat/heartbeat" ]
diff --git a/Makefile b/Makefile
index 68865a5..45fd681 100644
--- a/Makefile
+++ b/Makefile
@@ -16,14 +16,7 @@ build: generate
 
 deps:
 	go install github.com/valyala/quicktemplate/qtc
-	go get -u github.com/ferluci/fast-realip
-	go get -u github.com/go-redis/redis/v8
-	go get -u github.com/joho/godotenv
-	go get -u github.com/nitishm/go-rejson/v4
-	go get -u github.com/valyala/fasthttp
-	go get -u github.com/valyala/quicktemplate
-	go get -u golang.org/x/text/language
-	go get -u golang.org/x/text/message
+	go get -u ./...
 
 docker-build:
 	@docker build --build-arg COMMIT=${TAG} -t ${IMG} .