Add a GH build workflow

Signed-off-by: Adrien Gallouët <adrien@gallouet.fr>

.github/workflows/build.yml

@@ -0,0 +1,23 @@
+name: Build
+
+on: [push]
+
+jobs:
+  build:
+
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macOS-latest]
+
+    steps:
+    - uses: actions/checkout@v1
+    - name: Build
+      run: |
+          git submodule update --init --recursive
+          make prefix=. install
+
+    - uses: actions/upload-artifact@v1
+      with:
+        name: ${{ matrix.os }}
+        path: ./bin

Makefile

@@ -7,7 +7,7 @@ secret:
 
 install: secret
 	mkdir -p $(DESTDIR)$(prefix)/bin
-	cp -f secret $(DESTDIR)$(prefix)/bin
+	mv -f secret $(DESTDIR)$(prefix)/bin
 
 uninstall:
 	rm -f $(DESTDIR)$(prefix)/bin/secret

README.md

@@ -16,13 +16,16 @@ Keep your little secrets, publicly.
 
 ## Build and install
 
+Clone the repository recursively:
+
     $ git clone https://github.com/angt/secret --recursive
     $ cd secret
-    $ make
 
-Then, as `root`:
+Then, run as `root`:
 
-    # make install prefix=/usr
+    # make install
+
+As usual, you can customize the destination with `DESTDIR` and `prefix`.
 
 Currently, bash completion is not installed.
 Download the file [argz.sh](argz/argz.sh) then: