GitHub Actions: set new version numbers for the docker images

These are of course arbitrary. The Android container image for some
reason based its version number on the Qt version. Which may or may
not be a good idea. The other two had 0.x version numbers, so let's
move them to 1.0 for the first release that gets pushed to the
subsurface account on docker hub.

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

.github/workflows/android-dockerimage.yml

@@ -10,7 +10,7 @@ jobs:
   android-build-container:
     runs-on: ubuntu-latest
     env:
-      VERSION: ${{ '5.13.01' }}
+      VERSION: ${{ '5.13.10' }} # the version numbers here is based on the Qt version, the third digit is the rev of the docker image
 
     steps:
     - uses: actions/checkout@v1

.github/workflows/linux-dockerimage.yml

@@ -10,7 +10,7 @@ jobs:
   trusty-qt512:
     runs-on: ubuntu-latest
     env:
-      VERSION: ${{ '0.7' }}    # just assigning a number wouldn't get you a string
+      VERSION: ${{ '1.0' }}    # 'official' images should have a dot-zero version
 
     steps:
     - uses: actions/checkout@v1

.github/workflows/mxe-dockerimage-stage1.yml

@@ -14,7 +14,7 @@ jobs:
       #            as you test changes toward a new release, call those 1.1, 1.2, 1.3, etc
       #            VERSION is just that version presented as a string constant
       #
-      VERSION: ${{ '0.5' }}
+      VERSION: ${{ '1.0' }}
 
     steps:
     - uses: actions/checkout@v1