chore: reduce build artifact to 117Mb

.devcontainer/Dockerfile

@@ -0,0 +1,37 @@
+FROM golang:1.22-bullseye
+
+ARG TARGETARCH
+
+RUN export DEBIAN_FRONTEND=noninteractive && \
+    apt update && \
+    apt install -y -q --no-install-recommends \
+    build-essential gcc musl-dev linux-headers-${TARGETARCH} && \
+    apt clean && \
+    rm -rf /var/lib/apt/lists/*
+
+RUN useradd --create-home -s /bin/bash gobuild
+RUN usermod -a -G sudo gobuild
+RUN echo '%sudo ALL=(ALL) NOPASSWD:ALL' >> /etc/sudoers
+
+ARG PROJECT=go-sidecar
+RUN mkdir -p /workspaces/${PROJECT}
+WORKDIR /workspaces/${PROJECT}
+COPY --chown=gobuild:gobuild . .
+
+# system and linux dependencies
+RUN make deps-linux
+RUN chown -R gobuild:gobuild /go
+
+# local dependencies
+ENV USER=gobuild
+ENV GOBIN=/go/bin
+ENV PATH=$PATH:${GOBIN}
+USER gobuild
+
+RUN git config --global --add safe.directory /workspaces/${PROJECT}
+
+RUN make yamlfmt
+RUN make fmtcheck
+RUN make vet
+RUN make lint
+RUN make test

.devcontainer/devcontainer.json

@@ -6,7 +6,7 @@
 		// Sets the run context to one level up instead of the .devcontainer folder.
 		"context": "..",
 		// Update the 'dockerFile' property if you aren't using the standard 'Dockerfile' filename.
-		"dockerfile": "../Dockerfile"
+		"dockerfile": "./Dockerfile"
 	},
 	"customizations": {
 		"vscode": {

Dockerfile

@@ -1,31 +1,25 @@
-FROM golang:1.22-bullseye AS build
+FROM golang:1.22-bullseye AS builder
 
-RUN apt-get update
-RUN apt-get install -y make
+ARG TARGETARCH
 
-RUN useradd --create-home -s /bin/bash gobuild
-RUN usermod -a -G sudo gobuild
-RUN echo '%sudo ALL=(ALL) NOPASSWD:ALL' >> /etc/sudoers
+RUN export DEBIAN_FRONTEND=noninteractive && \
+    apt update && \
+    apt install -y -q --no-install-recommends \
+    build-essential gcc musl-dev linux-headers-${TARGETARCH} && \
+    apt clean && \
+    rm -rf /var/lib/apt/lists/*
 
-ARG PROJECT=go-sidecar
-RUN mkdir -p /workspaces/${PROJECT}
-WORKDIR /workspaces/${PROJECT}
-COPY --chown=gobuild:gobuild . .
+WORKDIR /build
+
+COPY . .
 
 # system and linux dependencies
 RUN make deps-linux
-RUN chown -R gobuild:gobuild /go
 
-# local dependencies
-ENV USER=gobuild
-ENV GOBIN=/go/bin
-ENV PATH=$PATH:${GOBIN}
-USER gobuild
+RUN make build
+
+FROM debian:stable-slim
 
-RUN git config --global --add safe.directory /workspaces/${PROJECT}
+COPY --from=builder /build/bin/cmd/sidecar /usr/local/bin/sidecar
 
-RUN make yamlfmt
-RUN make fmtcheck
-RUN make vet
-RUN make lint
-RUN make test
+ENTRYPOINT ["/usr/local/bin/sidecar"]

Makefile

@@ -43,6 +43,7 @@ clean:
 .PHONY: build/cmd/sidecar
 build/cmd/sidecar:
 	go build -ldflags="-s -w" -o bin/cmd/sidecar cmd/sidecar/main.go
+	strip bin/cmd/sidecar
 
 .PHONY: build
 build: build/cmd/sidecar