Add -ex switch to all docker bash commands. (#12601)

Without this, certain failures will be silently ignored.

PiperOrigin-RevId: 527718574

.github/workflows/test_cpp.yml

@@ -192,7 +192,7 @@ jobs:
           platform: linux/386
           credentials: ${{ secrets.GAR_SERVICE_ACCOUNT }}
           command: >-
-              /bin/bash -c '
+              /bin/bash -cex '
               cd /workspace;
               ccache -z;
               cmake . -DCMAKE_CXX_STANDARD=14 ${{ env.CCACHE_CMAKE_FLAGS }};

.github/workflows/test_csharp.yml

@@ -62,7 +62,7 @@ jobs:
           image: mcr.microsoft.com/dotnet/sdk:6.0.100-bullseye-slim
           credentials: ${{ secrets.GAR_SERVICE_ACCOUNT }}
           command: >-
-            /bin/bash -c '
+            /bin/bash -cex '
             DOTNET_CLI_TELEMETRY_OPTOUT=true
             DOTNET_SKIP_FIRST_TIME_EXPERIENCE=true
             dotnet publish -c Release -f net6.0 /workspace/csharp/src/Google.Protobuf.Test/Google.Protobuf.Test.csproj'
@@ -80,7 +80,7 @@ jobs:
           skip-staleness-check: true
           credentials: ${{ secrets.GAR_SERVICE_ACCOUNT }}
           command: >-
-            /bin/bash -c '
+            /bin/bash -cex '
             DOTNET_CLI_TELEMETRY_OPTOUT=true
             DOTNET_SKIP_FIRST_TIME_EXPERIENCE=true
             dotnet vstest /workspace/csharp/src/Google.Protobuf.Test/bin/Release/net6.0/publish/Google.Protobuf.Test.dll'

.github/workflows/test_php.yml

@@ -95,7 +95,7 @@ jobs:
           platform: linux/386
           credentials: ${{ secrets.GAR_SERVICE_ACCOUNT }}
           command: >-
-            /bin/bash -c '
+            /bin/bash -cex '
             cd php && php -v && php -m;
             composer update --ignore-platform-reqs;
             PROTOC=/workspace/${{ steps.cross-compile.outputs.protoc }}

.github/workflows/test_ruby.yml

@@ -63,7 +63,7 @@ jobs:
           skip-staleness-check: true
           credentials: ${{ secrets.GAR_SERVICE_ACCOUNT }}
           command: >-
-            /bin/bash -c '
+            /bin/bash -cex '
             gem install bundler;
             cd /workspace/ruby;
             bundle;