CI improvements and fixes (#23)

* Fix CodeQL

* Add Python to code scanning

* Add GitHub Super-Linter, fix linting error in Dockerfile

.github/Dockerfile

@@ -1,37 +1,29 @@
-FROM alpine:latest as build-env
-
-RUN apk update && \
-    apk upgrade && \
-    apk --update add \
-        gcc \
-        g++ \
-        cmake \
-        bash \
-        git \
-        make \
-        python3 \
-		&& \
-    rm -rf /var/cache/apk/*
+FROM alpine:3 as build-env
+
+RUN apk --no-cache add \
+      bash=~5.0.17 \
+      cmake=~3.17.2 \
+      gcc=~9.3.0 \
+      g++=~9.3.0 \
+      git=~2.26.2 \
+      make=~4.3 \
+      python3=~3.8.5
 
 RUN mkdir /install
 
 ARG BUILD_TYPE=Debug
 
 COPY Sample-Server /src/Sample-Server
 
-RUN mkdir -p /build && \
-    cd /build && \
-    cmake /src/Sample-Server/.github/ \
+WORKDIR /build
+RUN cmake /src/Sample-Server/.github/ \
       -DCMAKE_BUILD_TYPE=${BUILD_TYPE} \
-      -DCMAKE_INSTALL_PREFIX:PATH=/install &&\
+      -DCMAKE_INSTALL_PREFIX:PATH=/install /build &&\
     cmake --build .
 
-FROM alpine:latest as runtime
-RUN apk update && \
-    apk upgrade && \
-    apk --update add \
-      libstdc++ && \
-    rm -rf /var/cache/apk/*
+FROM alpine:3 as runtime
+RUN apk --no-cache add \
+      libstdc++=~9.3.0
 COPY --from=build-env /install/bin /app
 
 EXPOSE 4840

.github/workflows/codeql-analysis.yml

@@ -30,7 +30,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        language: [ 'cpp' ]
+        language: [ 'cpp', 'python' ]
         # CodeQL supports [ 'cpp', 'csharp', 'go', 'java', 'javascript', 'python' ]
         # Learn more:
         # https://docs.github.com/en/free-pro-team@latest/github/finding-security-vulnerabilities-and-errors-in-your-code/configuring-code-scanning#changing-the-languages-that-are-analyzed
@@ -39,7 +39,6 @@ jobs:
     - name: Checkout Sample-Server
       uses: actions/checkout@v2
       with:
-        path: Sample-Server
         submodules: recursive
 
     # Initializes the CodeQL tools for scanning.
@@ -51,11 +50,12 @@ jobs:
         # By default, queries listed here will override any specified in a config file.
         # Prefix the list here with "+" to use these queries and those in the config file.
         # queries: ./path/to/local/query, your-org/your-repo/queries@main
+
     - name: Build server with dependencies
       run: |
         mkdir -p build
         cd build
-        cmake ../Sample-Server/.github/ -DCMAKE_INSTALL_PREFIX:PATH=${{ env.CMAKE_INSTALL_PREFIX }}
+        cmake ../.github/ -DCMAKE_INSTALL_PREFIX:PATH=${{ env.CMAKE_INSTALL_PREFIX }}
         cmake --build .
     - name: Perform CodeQL Analysis
       uses: github/codeql-action/analyze@v1

.github/workflows/linter.yml

@@ -0,0 +1,55 @@
+---
+###########################
+###########################
+## Linter GitHub Actions ##
+###########################
+###########################
+name: Lint Code Base
+
+#
+# Documentation:
+# https://help.github.com/en/articles/workflow-syntax-for-github-actions
+#
+
+#############################
+# Start the job on all push #
+#############################
+on:
+  push:
+    branches-ignore: [main]
+    # Remove the line above to run when pushing to master
+  pull_request:
+    branches: [main, develop]
+
+###############
+# Set the Job #
+###############
+jobs:
+  build:
+    # Name the Job
+    name: Lint Code Base
+    # Set the agent to run on
+    runs-on: ubuntu-latest
+
+    ##################
+    # Load all steps #
+    ##################
+    steps:
+      ##########################
+      # Checkout the code base #
+      ##########################
+      - name: Checkout Code
+        uses: actions/checkout@v2
+        with:
+          # Full git history is needed to get a proper list of changed files within `super-linter`
+          fetch-depth: 0
+
+      ################################
+      # Run Linter against code base #
+      ################################
+      - name: Lint Code Base
+        uses: github/super-linter@v3
+        env:
+          VALIDATE_ALL_CODEBASE: false
+          DEFAULT_BRANCH: main
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}