From 554c1e9cf49ad850157da9465d4dac78db7267ad Mon Sep 17 00:00:00 2001
From: "Dustin C. Hatch" <dustin@hatch.name>
Date: Thu, 18 Jan 2024 19:53:52 -0600
Subject: [PATCH] container: Build static executable

Building a static executable and distributing it in a "from scratch"
container image dramatically reduces the image size: down to 8 MB from
102 MB.
---
 Containerfile | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/Containerfile b/Containerfile
index a561900..30487c3 100644
--- a/Containerfile
+++ b/Containerfile
@@ -1,23 +1,23 @@
-FROM registry.fedoraproject.org/fedora-minimal:39 AS build
+FROM docker.io/library/rust:1.73-alpine AS build
 
 RUN --mount=type=cache,target=/var/cache \
-    microdnf install -y \
-        --setopt install_weak_deps=0 \
-        cargo\
+    apk add \
+        musl-dev \
     && :
 
 COPY . /src
 
 WORKDIR /src
 
-RUN cargo build --release --locked
+RUN cargo build --release --locked \
+    && strip target/release/tmpl
 
 
-FROM registry.fedoraproject.org/fedora-minimal:39
+FROM scratch
 
-COPY --from=build /src/target/release/tmpl /usr/local/bin
+COPY --from=build /src/target/release/tmpl /tmpl
 
-ENTRYPOINT ["/usr/local/bin/tmpl"]
+ENTRYPOINT ["/tmpl"]
 
 LABEL name='tmpl' \
     vendor='Dustin C. Hatch' \