dockerfile: use dockerx to cache local modules

Author: fridrik01

Dockerfile

@@ -27,23 +27,7 @@ ARG DB_BACKEND=pebbledb
 ARG CMD_PATH=./cmd/beacond
 
 #######################################################
-###         Stage 1 - Cache Go Modules              ###
-#######################################################
-
-FROM golang:${GO_VERSION}-alpine3.20 AS mod-cache
-
-WORKDIR /workdir
-
-RUN apk add --no-cache git
-
-# Download Go modules
-COPY ./go.mod ./go.sum ./
-RUN --mount=type=cache,target=/root/.cache/go-build \
-    --mount=type=cache,target=/root/go/pkg/mod \
-    go mod download
-
-#######################################################
-###         Stage 2 - Build the Application         ###
+###         Stage 1 - Build the Application         ###
 #######################################################
 
 FROM golang:${GO_VERSION}-alpine3.20 AS builder
@@ -55,13 +39,16 @@ ARG BUILD_TAGS
 # Set the working directory
 WORKDIR /workdir
 
-# Consolidate RUN commands to reduce layers
+# Install dependencies
 RUN apk add --no-cache --update \
     ca-certificates \
     build-base
 
-# Copy the dependencies from the cache stage
-COPY --from=mod-cache /go/pkg /go/pkg
+COPY go.mod go.sum ./
+
+# Download dependencies with cache mount - this will use buildx cache
+RUN --mount=type=cache,target=/go/pkg/mod \
+    go mod download
 
 # Copy all the source code (this will ignore files/dirs in .dockerignore)
 COPY ./ ./
@@ -72,9 +59,9 @@ ARG APP_NAME
 ARG DB_BACKEND
 ARG CMD_PATH
 
-# Build beacond
+# Build beacond with cache mounts
 RUN --mount=type=cache,target=/root/.cache/go-build \
-    --mount=type=cache,target=/root/go/pkg/mod \
+    --mount=type=cache,target=/go/pkg/mod \
     env NAME=${NAME} DB_BACKEND=${DB_BACKEND} APP_NAME=${APP_NAME} CGO_ENABLED=1 && \
     go build \
     -mod=readonly \
@@ -91,7 +78,7 @@ RUN --mount=type=cache,target=/root/.cache/go-build \
     ${CMD_PATH}
 
 #######################################################
-###        Stage 3 - Prepare the Final Image        ###
+###        Stage 2 - Prepare the Final Image        ###
 #######################################################
 
 FROM ${RUNNER_IMAGE}
@@ -110,4 +97,4 @@ RUN mkdir -p /root/jwt /root/kzg && \
 EXPOSE 26656
 EXPOSE 26657
 
-ENTRYPOINT [ "beacond" ]
+ENTRYPOINT [ "beacond" ]

scripts/build/build.mk

@@ -101,9 +101,20 @@ IMAGE_NAME ?= $(TESTAPP)
 # Docker Paths
 DOCKERFILE = ./Dockerfile
 
-build-docker: ## build a docker image containing `beacond`
+# Create buildx builder if it doesn't exist
+.PHONY: docker-builder-setup
+docker-builder-setup:
+	@if ! docker buildx ls | grep -q beaconkit-builder; then \
+		echo "Creating beaconkit-builder for persistent cache..."; \
+		docker buildx create --name beaconkit-builder --driver docker-container --use; \
+	else \
+		docker buildx use beaconkit-builder; \
+	fi
+
+build-docker: docker-builder-setup ## build a docker image containing `beacond`
 	@echo "Build a release docker image for the Cosmos SDK chain..."
-	docker build \
+	docker buildx build \
+	--load \
 	--platform linux/$(ARCH) \
 	--build-arg GIT_COMMIT=$(shell git rev-parse HEAD) \
 	--build-arg GIT_VERSION=$(VERSION) \