fix: remove hardcoded --platform linux/arm64 causing exec format error in CI

Hardcoding --platform=linux/arm64 in FROM and docker commands breaks CI runners
(amd64) with 'exec format error'. Docker picks the correct native platform on
each host automatically. The ARCH=$(dpkg --print-architecture) in the glab
install step already handles the only place arch matters.

Author: Timna Brown

Dockerfile

@@ -1,4 +1,4 @@
-FROM --platform=linux/arm64 rust:1.85-bookworm AS base
+FROM rust:1.85-bookworm AS base
 
 RUN rustup component add clippy rustfmt
 

Makefile

@@ -52,17 +52,17 @@ auth-status:
 
 ## container-build: Build the dev container image
 container-build:
-	docker build --platform linux/arm64 --target dev -t devopster-cli-dev .
+	docker build --target dev -t devopster-cli-dev .
 
 ## container-test: Run tests inside the container
 container-test:
-	docker build --platform linux/arm64 -t devopster-cli-ci .
-	docker run --rm --platform linux/arm64 devopster-cli-ci cargo test
+	docker build -t devopster-cli-ci .
+	docker run --rm devopster-cli-ci cargo test
 
 ## container-run: Open a shell inside the container with host credentials mounted
 container-run:
-	docker build --platform linux/arm64 --target dev -t devopster-cli-dev .
-	docker run --rm -it --platform linux/arm64 \
+	docker build --target dev -t devopster-cli-dev .
+	docker run --rm -it \
 		-v "$(HOME)/.config/devopster:/root/.config/devopster" \
 		-v "$(PWD):/app" \
 		-w /app \

scripts/setup.sh

@@ -45,7 +45,7 @@ make container-build
 
 echo ""
 echo "==> Image ready. Opening container shell..."
-docker run --rm -it --platform linux/arm64 \
+docker run --rm -it \
     -v "$HOME/.config/devopster:/root/.config/devopster" \
     -v "$(pwd):/app" \
     -w /app \