ubuntu build dependencies extracted to composite actions (#1399)

superseding changes made in pr #1394 on request of @jonesmz 

extracted ubuntu build dependencies into a composite action for
maintainability reasons

.github/workflows/actions/ubuntu-build-deps/action.yml

@@ -0,0 +1,61 @@
+name: 'ubuntu build dependencies'
+description: 'install required build dependencies for ubuntu'
+inputs:
+  SUDO:
+    description: "set to true to run apt as root"
+    required: false
+    default: false
+
+
+runs:
+  using: 'composite'
+  steps:
+
+    - name: check if sudo is set
+      shell: bash
+      run: |
+        if [ ${{inputs.SUDO}} = true ]
+        then
+          AS_ROOT="sudo"
+        else
+          AS_ROOT=""
+        fi
+        echo "AS_ROOT=$AS_ROOT" >> $GITHUB_ENV
+
+    - name: apt update
+      shell: bash
+      run: ${{env.AS_ROOT}} apt update
+
+    - name: install build tools
+      shell: bash
+      run: |
+        ${{env.AS_ROOT}} apt install -y \
+            build-essential \
+            clang \
+            clang-tidy \
+            ninja-build \
+            iwyu \
+            pkgconf \
+            wget 
+        if [ "$(lsb_release -s -r)x" == "16.04x" ]; then apt install -y clang-tools; fi
+
+    - name: install coturn dependencies
+      shell: bash
+      run: |
+        ${{env.AS_ROOT}} apt install -y \
+            libevent-dev \
+            libssl-dev \
+            libpq-dev \
+            libsqlite3-dev \
+            libhiredis-dev \
+            libmongoc-dev \
+            libmicrohttpd-dev
+        if [ "$(lsb_release -s -r)x" == "16.04x" ]; then apt-get install -y libmariadb-client-lgpl-dev; fi
+        if [ "$(lsb_release -s -r)x" == "16.04x" ]; then apt-get install -y libmariadb-dev; fi
+
+    - name: Prometheus Support
+      shell: bash
+      run: |
+        wget https://github.com/digitalocean/prometheus-client-c/releases/download/v0.1.3/libprom-dev-0.1.3-Linux.deb
+        wget https://github.com/digitalocean/prometheus-client-c/releases/download/v0.1.3/libpromhttp-dev-0.1.3-Linux.deb
+        ${{env.AS_ROOT}} apt install -y ./libprom-dev-0.1.3-Linux.deb ./libpromhttp-dev-0.1.3-Linux.deb

.github/workflows/clang-tidy.yml

@@ -18,14 +18,10 @@ jobs:
       with:
         fetch-depth: 0
 
-    - name: Install dependencies
-      run: |
-        sudo apt-get update
-        sudo apt install -y clang clang-tidy clang-tools ninja-build iwyu
-        sudo apt install -y wget libevent-dev libssl-dev libpq-dev libmariadb-dev libsqlite3-dev libhiredis-dev libmongoc-dev libmicrohttpd-dev
-        wget https://github.com/digitalocean/prometheus-client-c/releases/download/v0.1.3/libprom-dev-0.1.3-Linux.deb
-        wget https://github.com/digitalocean/prometheus-client-c/releases/download/v0.1.3/libpromhttp-dev-0.1.3-Linux.deb
-        sudo apt install -y ./libprom-dev-0.1.3-Linux.deb ./libpromhttp-dev-0.1.3-Linux.deb
+    - name: install dependencies
+      uses: ./.github/workflows/actions/ubuntu-build-deps
+      with:
+        SUDO: true
 
     - name: Configure
       run: |

.github/workflows/compiler-sanitizers.yml

@@ -22,14 +22,12 @@ jobs:
     - uses: actions/checkout@v4
       with:
         fetch-depth: 0
+    
+    - name: install dependencies
+      uses: ./.github/workflows/actions/ubuntu-build-deps
+      with:
+        SUDO: true
 
-    - name: Install dependencies
-      run: |
-        sudo apt-get update
-        sudo apt install -y clang wget libevent-dev libssl-dev libpq-dev libmariadb-dev libsqlite3-dev libhiredis-dev libmongoc-dev libmicrohttpd-dev
-        wget https://github.com/digitalocean/prometheus-client-c/releases/download/v0.1.3/libprom-dev-0.1.3-Linux.deb
-        wget https://github.com/digitalocean/prometheus-client-c/releases/download/v0.1.3/libpromhttp-dev-0.1.3-Linux.deb
-        sudo apt install -y ./libprom-dev-0.1.3-Linux.deb ./libpromhttp-dev-0.1.3-Linux.deb
 
     - name: Configure
       run: |

.github/workflows/lint.yml

@@ -11,18 +11,13 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - name: Install dependencies
-      run: |
-        sudo apt update
-        sudo apt install -y clang-format-15
-        sudo apt install -y \
-            libevent-dev \
-            libssl-dev \
-            libpq-dev libmariadb-dev libsqlite3-dev \
-            libhiredis-dev \
-            libmongoc-dev \
-            libmicrohttpd-dev \
     - uses: actions/checkout@v4
+    - name: install dependencies
+      uses: ./.github/workflows/actions/ubuntu-build-deps
+      with:
+        SUDO: true
+    - name: install clang-format-15
+      run: sudo apt install -y clang-format-15
     - name: configure
       run: ./configure
     - name: lint

.github/workflows/tests.yml

@@ -2,7 +2,6 @@ name: C/C++ CI
 
 on:
   push:
-    branches: [ $default-branch ]
   pull_request:
     types: [ opened, reopened, synchronize ]
 
@@ -11,33 +10,16 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ 'ubuntu:16.04', 'ubuntu:20.04', 'ubuntu:22.04' ]
+        os: [ 'ubuntu:16.04', 'ubuntu:18.04', 'ubuntu:20.04', 'ubuntu:22.04' ]
     runs-on: ubuntu-latest
     container: ${{ matrix.os }}
     steps:
+    - uses: actions/checkout@v3
     - name: Install dependencies
       # Set env variable or otherwise tzdata package requires interaction
       env:
-        DEBIAN_FRONTEND: noninteractive 
-      run: |
-        apt-get update
-        apt-get install -y \
-            build-essential pkgconf
-        apt-get install -y \
-            wget \
-            libevent-dev \
-            libssl-dev \
-            libpq-dev libsqlite3-dev \
-            libhiredis-dev \
-            libmongoc-dev \
-            libmicrohttpd-dev
-        if [ ${{ matrix.os }}  = 'ubuntu:16.04' ]; then apt-get install -y libmariadb-client-lgpl-dev; fi
-        if [ ${{ matrix.os }} != 'ubuntu:16.04' ]; then apt-get install -y libmariadb-dev; fi
-        wget https://github.com/digitalocean/prometheus-client-c/releases/download/v0.1.3/libprom-dev-0.1.3-Linux.deb && \
-            wget https://github.com/digitalocean/prometheus-client-c/releases/download/v0.1.3/libpromhttp-dev-0.1.3-Linux.deb && \
-            apt install ./libprom-dev-0.1.3-Linux.deb ./libpromhttp-dev-0.1.3-Linux.deb && \
-            rm ./libprom-dev-0.1.3-Linux.deb ./libpromhttp-dev-0.1.3-Linux.deb
-    - uses: actions/checkout@v3
+        DEBIAN_FRONTEND: noninteractive
+      uses: ./.github/workflows/actions/ubuntu-build-deps
     - name: configure
       run: ./configure
     - name: make