Devcontainer and action

.devcontainer/Dockerfile

@@ -0,0 +1,16 @@
+FROM mono
+# Install additional OS packages.
+RUN apt-get update && export DEBIAN_FRONTEND=noninteractive \
+    && apt-get -y install --no-install-recommends \
+    ssh \
+    git \
+    sudo
+
+# Add the vscode user.
+ARG USERNAME=vscode
+ARG USER_UID=1000
+ARG USER_GID=$USER_UID
+RUN groupadd --gid $USER_GID $USERNAME \
+    && useradd --uid $USER_UID --gid $USER_GID -m $USERNAME -s /bin/bash \
+    && echo $USERNAME ALL=\(root\) NOPASSWD:ALL > /etc/sudoers.d/$USERNAME \
+    && chmod 0440 /etc/sudoers.d/$USERNAME

.devcontainer/devcontainer.json

@@ -0,0 +1,11 @@
+{
+	"name": "Mono (.NET)",
+	"build": {
+		"dockerfile": "Dockerfile"
+	},
+	"extensions": [
+		"ms-dotnettools.csharp",
+		"redhat.vscode-yaml"
+	],
+	"remoteUser": "vscode"
+}

.github/workflows/main.yml

@@ -0,0 +1,37 @@
+name: CI
+
+on: [push]
+
+jobs:
+  windows-build:
+    runs-on: windows-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@master
+      - name: Setup MSBuild.exe
+        uses: microsoft/setup-msbuild@v1.0.2
+      - name: MSBuild
+        working-directory: percentage
+        run: msbuild percentage.sln /property:Configuration=Release
+      # - name: Artifact upload
+      #   uses: actions/upload-artifact@master
+      #   with:
+      #     name: percentage
+      #     path: percentage\percentage\bin\Release\percentage.exe
+  linux-build:
+    runs-on: ubuntu-latest
+    container:
+      image: mono
+    steps:
+      - name: Prerequisites
+        run: apt update && apt install -y --no-install-recommends ssh git
+      - name: Checkout
+        uses: actions/checkout@master
+      - name: MSBuild
+        working-directory: percentage
+        run: msbuild percentage.sln -p:Configuration=Release
+      # - name: Artifact upload
+      #   uses: actions/upload-artifact@master
+      #   with:
+      #     name: percentage
+      #     path: percentage\percentage\bin\Release\percentage.exe

.markdownlint.yaml

@@ -0,0 +1,16 @@
+---
+MD007:
+  indent: 4
+MD013:
+  line_length: 80
+  tables: false
+  code_blocks: false
+MD030:
+  ul_single: 3
+  ol_single: 2
+  ul_multi: 3
+  ol_multi: 2
+MD033:
+  allowed_elements:
+    - pre
+    - br

README.md

@@ -1,26 +1,41 @@
 # percentage
 
-![](https://raw.githubusercontent.com/kas/percentage/master/percentage.png)
+![CI](https://github.com/kas/percentage/workflows/CI/badge.svg)
 
-See your battery percentage in the Windows 10 system tray
+![Screenshot](percentage.png)
+
+See your battery percentage in the Windows 10 system tray.
 
 ## Installing
 
-1. [Download the latest release](https://github.com/kas/percentage/releases)
-1. Put percentage.exe in your startup folder
-   1. To get to your startup folder, press Windows+R, type "shell:startup", then press enter
+-   [Download the latest release](https://github.com/kas/percentage/releases).
+-   Put `percentage.exe` in your startup folder (to get to your startup folder,
+    press `Windows + R`, type `shell:startup`, and press enter).
 
 ## Compiling
 
 This project was compiled with Visual Studio Community 2019.
 
 Select ".NET desktop development" when setting up Visual Studio.
 
-To build the project
-1. Open the percentage/percentage.sln file with Visual Studio
-1. Click "Build > Build Solution"
-1. percentage.exe can be found at percentage\percentage\percentage\bin\Debug\percentage.exe
+To compile using a Windows Docker image with this pre-installed, first install 
+Docker Desktop and configure it to run Windows containers, then change to the 
+root directory of the repository and run the following:
+
+```powershell
+docker run -v "$(pwd)\:C:\Build\" nugardt/msbuild:15.5 msbuild \
+  C:\Build\percentage\percentage.sln /property:Configuration=Release
+```
+
+Alternatively, simply open the project in the provided devcontainer and run:
+
+```sh
+msbuild percentage/percentage.sln -p:Configuration=Release
+```
+
+The output binary is in `percentage/percentage/bin/release`.
 
 ## Contributions
 
-My goal for this project is to keep it as simple as possible. I welcome suggestions, but for complicated features I'd recommend forking the project.
+My goal for this project is to keep it as simple as possible. I welcome 
+suggestions, but for complicated features I'd recommend forking the project.

percentage/percentage/percentage.csproj

@@ -55,7 +55,7 @@
     <ManifestKeyFile>percentage_TemporaryKey.pfx</ManifestKeyFile>
   </PropertyGroup>
   <PropertyGroup>
-    <GenerateManifests>true</GenerateManifests>
+    <GenerateManifests>false</GenerateManifests>
   </PropertyGroup>
   <PropertyGroup>
     <SignManifests>false</SignManifests>