build: use just for GH workflows

.github/workflows/ci.yaml

@@ -12,7 +12,7 @@ on:
       - main
 
 jobs:
-  fmt-lint-test:
+  ci:
     runs-on: ubuntu-latest
     steps:
       - name: Check out
@@ -26,17 +26,22 @@ jobs:
           rustup component add rustfmt --toolchain nightly
           # rustup component add clippy --toolchain nightly
 
+      - name: Install just
+        uses: taiki-e/install-action@v2
+        with:
+          tool: just
+
       - name: Install protoc
         uses: arduino/setup-protoc@v2
 
       - name: Set up Rust cache
         uses: Swatinem/rust-cache@v2
 
-      - name: Check code format (cargo fmt)
-        run: cargo +nightly fmt --check
+      - name: Check code format
+        run: just fmt_check
 
-      - name: Lint (cargo clippy)
-        run: cargo clippy --no-deps -- -D warnings
+      - name: Run linter
+        run: just lint
 
-      - name: Test (cargo test)
-        run: cargo test
+      - name: Run tests
+        run: just test

hello-tracing-backend/Dockerfile

@@ -1,4 +1,4 @@
-ARG RUST_VERSION=1.70.0
+ARG RUST_VERSION=1.72.1
 
 FROM rust:${RUST_VERSION}-bullseye AS builder
 RUN apt-get update && \

hello-tracing-gateway/Dockerfile

@@ -1,4 +1,4 @@
-ARG RUST_VERSION=1.70.0
+ARG RUST_VERSION=1.72.1
 
 FROM rust:${RUST_VERSION}-bullseye AS builder
 RUN apt-get update && \

justfile

@@ -1,13 +1,14 @@
 set shell := ["bash", "-uc"]
 
-rust_version := `grep 'rust-version' Cargo.toml | grep -Eo '\d+\.\d+\.\d+'`
-
 check:
 	cargo check --tests
 
 fmt:
 	cargo +nightly fmt
 
+fmt_check:
+	cargo +nightly fmt --check
+
 lint:
 	cargo clippy --no-deps -- -D warnings
 
@@ -33,12 +34,10 @@ run-backend:
 
 docker:
 	docker build \
-		--build-arg RUST_VERSION={{rust_version}} \
 		-t hseeberger/hello-tracing-backend \
 		-f hello-tracing-backend/Dockerfile \
 		.
 	docker build \
-		--build-arg RUST_VERSION={{rust_version}} \
 		-t hseeberger/hello-tracing-gateway \
 		-f hello-tracing-gateway/Dockerfile \
 		.