CICD: Add GitHub Action to build the Windows (MXE) Builder Docker Image.

Add a GitHub action that builds the docker image to run builds for the
Windows (MXE) version of Subsurface.
Also update the MXE image Dockerfile to the latest version of MXE, and
add a patch to use a current version of mdbtools.
Configure GitHub actions that do not build docker images to not trigger
on changes to the contents of `scripts/docker/`.

Signed-off-by: Michael Keller <github@ike.ch>

.github/workflows/android.yml

@@ -1,9 +1,13 @@
 name: Android
 on:
   push:
+    paths-ignore:
+    - scripts/docker/**
     branches:
     - master
   pull_request:
+    paths-ignore:
+    - scripts/docker/**
     branches:
     - master
 

.github/workflows/fedora-copr-build.yml

@@ -1,6 +1,8 @@
 name: Fedora Copr Build
 on:
   push:
+    paths-ignore:
+    - scripts/docker/**
     branches:
     - master
 

.github/workflows/ios.yml

@@ -1,9 +1,13 @@
 name: iOS
 on:
   push:
+    paths-ignore:
+    - scripts/docker/**
     branches:
     - master
   pull_request:
+    paths-ignore:
+    - scripts/docker/**
     branches:
     - master
 

.github/workflows/linux-fedora-qt6.yml

@@ -1,9 +1,13 @@
 name: Fedora 35 / Qt 6--
 on:
   push:
+    paths-ignore:
+    - scripts/docker/**
     branches:
     - master
   pull_request:
+    paths-ignore:
+    - scripts/docker/**
     branches:
     - master
 

.github/workflows/linux-focal-5.12.yml

@@ -1,9 +1,13 @@
 name: Ubuntu 20.04 / Qt 5.12--
 on:
   push:
+    paths-ignore:
+    - scripts/docker/**
     branches:
     - master
   pull_request:
+    paths-ignore:
+    - scripts/docker/**
     branches:
     - master
 

.github/workflows/linux-jammy-5.15.yml

@@ -1,9 +1,13 @@
 name: Ubuntu 22.04 / Qt 5.15--
 on:
   push:
+    paths-ignore:
+    - scripts/docker/**
     branches:
     - master
   pull_request:
+    paths-ignore:
+    - scripts/docker/**
     branches:
     - master
 

.github/workflows/linux-snap.yml

@@ -2,9 +2,13 @@ name: Linux Snap
 
 on:
   push:
+    paths-ignore:
+    - scripts/docker/**
     branches:
     - master
   pull_request:
+    paths-ignore:
+    - scripts/docker/**
     branches:
     - master
 

.github/workflows/linux-trusty-5.12.yml

@@ -1,9 +1,13 @@
 name: Ubuntu 14.04 / Qt 5.12 for AppImage--
 on:
   push:
+    paths-ignore:
+    - scripts/docker/**
     branches:
     - master
   pull_request:
+    paths-ignore:
+    - scripts/docker/**
     branches:
     - master
 

.github/workflows/mac.yml

@@ -1,9 +1,13 @@
 name: Mac
 on:
   push:
+    paths-ignore:
+    - scripts/docker/**
     branches:
     - master
   pull_request:
+    paths-ignore:
+    - scripts/docker/**
     branches:
     - master
 

.github/workflows/post-releasenotes.yml

@@ -1,6 +1,8 @@
 name: Post Release
 on:
   push:
+    paths-ignore:
+    - scripts/docker/**
     branches:
     - master
 

.github/workflows/ubuntu-launchpad-build.yml

@@ -1,6 +1,8 @@
 name: Ubuntu Launchpad Build
 on:
   push:
+    paths-ignore:
+    - scripts/docker/**
     branches:
     - master
 

.github/workflows/windows-mxe-dockerimage.yml

@@ -0,0 +1,36 @@
+name: Windows (MXE) Docker Image
+
+on:
+  push:
+    paths:
+    - scripts/docker/mxe-build-container/**
+    - .github/workflows/windows-mxe-dockerimage.yml
+
+jobs:
+  windows-mxe:
+    runs-on: ubuntu-latest
+    env:
+      VERSION: ${{ '3.1.0' }}    # 'official' images should have a dot-zero version
+      mxe_sha: 'c0bfefc57a00fdf6cb5278263e21a478e47b0bf5'
+
+    steps:
+    - uses: actions/checkout@v1
+
+    - name: Build the name for the docker image
+      id: build_name
+      run: |
+        v=${{ env.VERSION }}
+        b=${{ github.ref }} # -BRANCH suffix, unless the branch is master
+        b=${b/refs\/heads\//}
+        b=${b,,} # the name needs to be all lower case
+        if [ $b = "master" ] ; then b="" ; else b="-$b" ; fi
+        echo "NAME=${{ github.repository_owner }}/mxe-build${b}:${v}" >> $GITHUB_OUTPUT
+
+    - name: Build and Publish Linux Docker image to Dockerhub
+      uses: elgohr/Publish-Docker-Github-Action@v5
+      with:
+        name:       ${{ steps.build_name.outputs.NAME }}
+        username:   ${{ secrets.DOCKER_USERNAME }}
+        password:   ${{ secrets.DOCKER_PASSWORD }}
+        workdir:    './scripts/docker/mxe-build-container/'
+        buildargs:  mxe_sha

.github/workflows/windows.yml

@@ -1,9 +1,13 @@
 name: Windows
 on:
   push:
+    paths-ignore:
+    - scripts/docker/**
     branches:
     - master
   pull_request:
+    paths-ignore:
+    - scripts/docker/**
     branches:
     - master