Merge pull request #2 from stuartleeks/sl/devcontainer-action

Add initial GitHub action for build

Author: stuartleeks

.devcontainer/Dockerfile

@@ -31,6 +31,8 @@ ARG USERNAME=vscode
 ARG USER_UID=1000
 ARG USER_GID=$USER_UID
 
+# Set env for tracking that we're running in a devcontainer
+ENV DEVCONTAINER=true
 
 # Enable go modules
 ENV GO111MODULE=on

.github/workflows/build.yaml

@@ -0,0 +1,23 @@
+name: build
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:  
+  build:
+    runs-on: ubuntu-18.04
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: CI Tooling
+      run: sudo apt update && sudo apt install build-essential -y
+    
+    - name: Build devcontainer for tooling
+      run: sudo -E make devcontainer
+
+    - name: Run the build
+      run: sudo -E make devcontainer-build

Makefile

@@ -2,4 +2,15 @@ build:
 	go build ./cmd/devcontainer
 
 devcontainer:
-	docker build -f ./.devcontainer/Dockerfile ./.devcontainer -t devcontainer-cli
+	docker build -f ./.devcontainer/Dockerfile ./.devcontainer -t devcontainer-cli
+
+
+devcontainer-build:
+ifdef DEVCONTAINER
+	$(error This target can only be run outside of the devcontainer as it mounts files and this fails within a devcontainer. Don't worry all it needs is docker)
+endif
+	@docker run -v ${PWD}:${PWD} \
+		--entrypoint /bin/bash \
+		--workdir "${PWD}" \
+		devcontainer-cli \
+		-c "make build"