Use Firebird from PPA

Author: hazzik

.travis.yml

@@ -1,5 +1,4 @@
-group: edge
-dist: bionic
+dist: xenial
 language: csharp
 mono: none
 dotnet: 2.1.300
@@ -25,13 +24,9 @@ before_install:
   - |-
     if [[ "$DB" == "Firebird" ]]
     then
-      sudo apt-get install -y libicu-dev libtommath-dev
-      sudo ln -s /usr/lib/x86_64-linux-gnu/libtommath.so.1 /usr/lib/x86_64-linux-gnu/libtommath.so.0
-      curl -L -O https://github.com/FirebirdSQL/firebird/releases/download/R3_0_5/Firebird-3.0.5.33220-0.amd64.tar.gz
-      tar xzvf Firebird-3.0.5.33220-0.amd64.tar.gz
-      pushd Firebird-3.0.5.33220-0.amd64
-        sudo ./install.sh -silent   
-      popd
+      sudo add-apt-repository ppa:mapopa/firebird3.0
+      sudo apt-get update -qq
+      sudo apt-get install -y libicu-dev libtommath-dev firebird3.0
       export $(sudo cat /opt/firebird/SYSDBA.password | grep -v ^# | xargs)
       sudo chmod 775 /tmp/firebird
       echo -e "nhibernate = /tmp/firebird/nhibernate.fdb" | sudo tee -a /opt/firebird/databases.conf