GitHub Actions: better job names

This makes it more obvious which action actually failed.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

.github/workflows/android.yml

@@ -8,7 +8,7 @@ on:
     - master
 
 jobs:
-  buildInContainer:
+  buildAndroid:
     runs-on: ubuntu-latest
     container:
       image: docker://subsurface/android-build-container:5.15.1

.github/workflows/ios.yml

@@ -8,7 +8,7 @@ on:
     - master
 
 jobs:
-  mobileBuild:
+  iOSBuild:
     runs-on: macOS-10.15
     steps:
     - name: switch to Xcode 11

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

@@ -8,7 +8,7 @@ on:
     - master
 
 jobs:
-  buildInContainer:
+  buildUbuntuEoan:
     runs-on: ubuntu-latest
     container:
       image: ubuntu:20.04

.github/workflows/linux-groovy-5.14.yml

@@ -8,7 +8,7 @@ on:
     - master
 
 jobs:
-  buildInContainer:
+  buildUbuntuFocal:
     runs-on: ubuntu-latest
     container:
       image: ubuntu:20.10

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

@@ -8,7 +8,7 @@ on:
     - master
 
 jobs:
-  buildInContainer:
+  buildAppImage:
     runs-on: ubuntu-latest
     container:
       image: docker://subsurface/trusty-qt512:1.0

.github/workflows/linux-tumbleweed-qt-latest.yml

@@ -8,7 +8,7 @@ on:
     - master
 
 jobs:
-  buildInContainer:
+  buildOpenSUSElatest:
     runs-on: ubuntu-latest
     container:
       image: opensuse/tumbleweed:latest

.github/workflows/mac.yml

@@ -8,7 +8,7 @@ on:
     - master
 
 jobs:
-  desktopBuild:
+  buildMac:
     runs-on: macOS-latest
     steps:
     - name: checkout sources

.github/workflows/windows.yml

@@ -8,7 +8,7 @@ on:
     - master
 
 jobs:
-  buildInContainer:
+  buildWindows:
     runs-on: ubuntu-latest
     container:
       image: docker://subsurface/mxe-build-container:2.0