From d6cec0ba50e60fbf5ff0f7fbde0352b07fbde399 Mon Sep 17 00:00:00 2001
From: Lion - dapplion <35266934+dapplion@users.noreply.github.com>
Date: Tue, 25 Nov 2025 00:45:25 -0300
Subject: [PATCH] Dockerfile with cargo artifacts caching (#8455)
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When developing locally with kurtosis a typical dev workflow is:

loop:
- Build local lighthouse docker image
- Run kurtosis
- Observe bug
- Fix code

The docker build step would download and build all crates. Docker docs suggests an optimization to cache build artifacts, see https://docs.docker.com/build/cache/optimize/#use-cache-mounts

I have tested and it's like building Lighthouse outside of a docker environment 🤤  The docker build time after changing one line in the top beacon_node crate is 50 seconds on my local machine ❤️

The release path is un-affected. Do you have worries this can affect the output of the release binaries? This is too good of an improvement to keep it in a separate Dockerfile.





Co-Authored-By: dapplion <35266934+dapplion@users.noreply.github.com>
---
 Dockerfile     | 10 ++++++++--
 Dockerfile.dev | 25 -------------------------
 2 files changed, 8 insertions(+), 27 deletions(-)
 delete mode 100644 Dockerfile.dev

diff --git a/Dockerfile b/Dockerfile
index f925836e48..8cc20ab000 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,13 +1,19 @@
 FROM rust:1.88.0-bullseye AS builder
 RUN apt-get update && apt-get -y upgrade && apt-get install -y cmake libclang-dev
-COPY . lighthouse
 ARG FEATURES
 ARG PROFILE=release
 ARG CARGO_USE_GIT_CLI=true
 ENV FEATURES=$FEATURES
 ENV PROFILE=$PROFILE
 ENV CARGO_NET_GIT_FETCH_WITH_CLI=$CARGO_USE_GIT_CLI
-RUN cd lighthouse && make
+ENV CARGO_INCREMENTAL=1
+
+WORKDIR /lighthouse
+COPY . .
+# Persist the registry and target file across builds. See: https://docs.docker.com/build/cache/optimize/#use-cache-mounts
+RUN --mount=type=cache,target=/usr/local/cargo/registry \
+    --mount=type=cache,target=/lighthouse/target \
+    make
 
 FROM ubuntu:22.04
 RUN apt-get update && apt-get -y upgrade && apt-get install -y --no-install-recommends \
diff --git a/Dockerfile.dev b/Dockerfile.dev
deleted file mode 100644
index 50bf1e5898..0000000000
--- a/Dockerfile.dev
+++ /dev/null
@@ -1,25 +0,0 @@
-FROM rust:1.88.0-bullseye AS builder
-RUN apt-get update && apt-get -y upgrade && apt-get install -y cmake libclang-dev
-WORKDIR /lighthouse
-
-ARG FEATURES
-ARG PROFILE=release
-ARG CARGO_USE_GIT_CLI=true
-ENV FEATURES=$FEATURES
-ENV PROFILE=$PROFILE
-ENV CARGO_NET_GIT_FETCH_WITH_CLI=$CARGO_USE_GIT_CLI
-ENV CARGO_INCREMENTAL=1
-
-COPY . .
-# Persist the registry and target file across builds. See: https://docs.docker.com/build/cache/optimize/#use-cache-mounts
-RUN --mount=type=cache,target=/usr/local/cargo/registry \
-    --mount=type=cache,target=/lighthouse/target \
-    make
-
-FROM ubuntu:22.04
-RUN apt-get update && apt-get -y upgrade && apt-get install -y --no-install-recommends \
-  libssl-dev \
-  ca-certificates \
-  && apt-get clean \
-  && rm -rf /var/lib/apt/lists/*
-COPY --from=builder /usr/local/cargo/bin/lighthouse /usr/local/bin/lighthouse
\ No newline at end of file