Use GitHub Actions for CI and release (#4)

Pull requests and master now get checks run regularly.

Tags beginning with 'release/*' are automatically publishbed as draft
releases.

Author: olix0r

.github/workflows/check.yml

@@ -0,0 +1,16 @@
+name: Check
+
+on:
+  pull_request: {}
+  push:
+    branches:
+    - master
+
+jobs:
+  check:
+    runs-on: ubuntu-18.04
+    container:
+      image: docker://rust:1.37-buster
+    steps:
+    - uses: actions/checkout@v1
+    - run: make check-fmt check

.github/workflows/release.yml

@@ -0,0 +1,37 @@
+name: Release
+
+on:
+  push:
+    tags:
+    - 'release/*'
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v1
+
+    - name: Get tag
+      run: |
+        echo "${{ github.ref }}" | sed -E 's,^refs/tags/,,' >release.tag
+        cat release.tag
+        echo "${{ github.ref }}" | sed -E 's,^refs/tags/release/,,' >release.name
+        cat release.name
+
+    - name: Build
+      uses: docker://rust:1.37-buster
+      env:
+        CARGO_RELEASE: 1
+      with:
+        entrypoint: make
+        args: release
+
+    - name: Upload
+      uses: docker://github/ghx:master
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      with:
+        entrypoint: sh
+        # bastard blackbox ghx reads GITHUB_REF and then barfs on it, no matter
+        # its command-line args. so just hide that env from it..
+        args: -c "unset GITHUB_REF ; cd release && ghx release create --verbose --tag=$(cat ../release.tag) --name=$(cat ../release.name) --ref ${{ github.sha }} --draft *"

.gitignore

@@ -1,2 +1,3 @@
+/release
 /target
-**/*.rs.bk
+**/*.rs.bk

Cargo.lock

@@ -1,7 +1,7 @@
 [package]
 name = "linkerd-await"
-version = "0.1.1"
-authors = ["Oliver Gould <ver@buoyant.io>"]
+version = "0.1.2"
+authors = ["Linkerd Developers <[email protected].io>"]
 edition = "2018"
 publish = false
 

Cargo.toml

@@ -0,0 +1,60 @@
+TARGET ?= x86_64-unknown-linux-musl
+TARGET_DIR = target/$(TARGET)/debug
+ifdef CARGO_RELEASE
+	RELEASE = --release
+	TARGET_DIR = target/$(TARGET)/release
+endif
+TARGET_BIN = $(TARGET_DIR)/linkerd-await
+
+RUSTUP ?= rustup
+CARGO ?= cargo
+CARGO_BUILD = $(CARGO) build --frozen --target=$(TARGET) $(RELEASE)
+CARGO_CHECK = $(CARGO) check --all --frozen --target=$(TARGET) $(RELEASE)
+CARGO_TEST = $(CARGO) test --all --frozen --target=$(TARGET) $(RELEASE)
+CARGO_FMT = $(CARGO) fmt --all
+
+SHASUM = shasum -a 256
+
+.PHONY: all
+all: check-fmt check
+
+.PHONY: configure-target
+configure-target:
+	$(RUSTUP) target add $(TARGET)
+
+.PHONY: configure-fmt
+configure-fmt:
+	$(RUSTUP) component add rustfmt
+
+.PHONY: fetch
+fetch: Cargo.lock
+	$(CARGO) fetch --locked
+
+$(TARGET_BIN): fetch configure-target
+	$(CARGO_BUILD)
+
+.PHONY: clean
+clean:
+	$(CARGO) clean --target-dir $(TARGET_DIR)
+
+.PHONY: check-fmt
+check-fmt: configure-fmt
+	$(CARGO_FMT) -- --check
+
+.PHONY: check
+check: configure-target fetch
+	$(CARGO_CHECK)
+
+
+.PHONY: fmt
+fmt: configure-fmt
+	$(CARGO_FMT)
+
+.PHONY: build
+build: $(TARGET_BIN)
+
+release: $(TARGET_BIN)
+	@rm -rf release && mkdir release
+	cp $(TARGET_BIN) release/linkerd-await
+	strip release/linkerd-await
+	$(SHASUM) release/linkerd-await >release/linkerd-await.shasum

Dockerfile

@@ -5,7 +5,7 @@ A command-wrapper that polls Linkerd for readiness until it becomes ready and on
 ## Usage
 
 ```
-linkerd-await 0.1.1
+linkerd-await 0.1.2
 Oliver Gould <[email protected]>
 Wait for linkerd to become ready before running a program.
 
@@ -32,9 +32,11 @@ The `linkerd-await` container image contains only a static binary, so it's
 possible to use this utility in `scratch` images:
 
 ```dockerfile
+ARG LINKERD_AWAIT_VERSION=v0.1.2
+
 FROM scratch
-# ...
-COPY --from=olix0r/linkerd-await:v0.1.1 /linkerd-await /
+RUN curl -vsLO https://github.com/olix0r/linkerd-await/releases/download/${LINKERD_AWAIT_VERSION}/linkerd-await
+# ... install myapp ..
 ENTRYPOINT ["/linkerd-await", "--"]
 CMD ["/myapp", "-flags"]
 ```