add missing db versions env vars

Author: gggeek

docker/.env

@@ -63,27 +63,28 @@ APP_DEBUG=0
 # These are the tags used to identify the base docker images which contain the databases.
 # By default the major version is fixed and the minor version is left floating, but you can change it if you need to
 # test a specific db minor version
-MARIADB_5_5_VERSION=
-MARIADB_10_0_VERSION=
-MARIADB_10_1_VERSION=
-MARIADB_10_2_VERSION=
-MARIADB_10_3_VERSION=
-MARIADB_10_4_VERSION=
-MARIADB_10_5_VERSION=
-MYSQL_5_6_VERSION=
-MYSQL_5_5_VERSION=
-MYSQL_5_7_VERSION=
-MYSQL_8_0_VERSION=
-PERCONA_5_7_VERSION=
-PERCONA_8_0_VERSION
-POSTGRESQL_9_4_VERSION=
-POSTGRESQL_9_5_VERSION=
-POSTGRESQL_9_6_VERSION=
-POSTGRESQL_10_VERSION=
-POSTGRESQL_11_VERSION=
-POSTGRESQL_12_VERSION=
-MSSQLSERVER_2017_VERSION=
-MSSQLSERVER_2019_VERSION=
+MARIADB_5_5_VERSION=5.5
+MARIADB_10_0_VERSION=10.0
+MARIADB_10_1_VERSION=10.1
+MARIADB_10_2_VERSION=10.2
+MARIADB_10_3_VERSION=10.3
+MARIADB_10_4_VERSION=10.4
+MARIADB_10_5_VERSION=10.5
+MYSQL_5_5_VERSION=5.5
+MYSQL_5_6_VERSION=5.6
+MYSQL_5_7_VERSION=5.7
+MYSQL_8_0_VERSION=8.0
+PERCONA_5_6_VERSION=5.6
+PERCONA_5_7_VERSION=5.7
+PERCONA_8_0_VERSION=8.0
+POSTGRESQL_9_4_VERSION=9.4
+POSTGRESQL_9_5_VERSION=9.5
+POSTGRESQL_9_6_VERSION=9.6
+POSTGRESQL_10_VERSION=10
+POSTGRESQL_11_VERSION=11
+POSTGRESQL_12_VERSION=12
+MSSQLSERVER_2017_VERSION=2017-latest
+MSSQLSERVER_2019_VERSION=2019-latest
 
 ### MySQL + MariaDB Settings
 # NB: these are used when the db is created the 1st time the platform is executed. Changing them afterwards will have