diff --git a/test/pkg/source/internal/testcommons.go b/test/pkg/source/internal/testcommons.go
index d2a7b45..e9c9c00 100644
--- a/test/pkg/source/internal/testcommons.go
+++ b/test/pkg/source/internal/testcommons.go
@@ -6,7 +6,10 @@ import (
 	"io"
 	"os"
 	"os/exec"
+	"path/filepath"
+	"runtime"
 	"strings"
+	"sync"
 
 	"github.com/pkg/errors"
 	"github.com/spf13/viper"
@@ -18,6 +21,40 @@ import (
 const ResticPort = "8000/tcp"
 const ResticPassword = "resticRepo"
 
+var (
+	projectRootOnce sync.Once
+	projectRoot     string
+	projectRootErr  error
+)
+
+// ProjectRoot returns the repository root as determined by the location of go.mod relative to this file.
+func ProjectRoot() string {
+	projectRootOnce.Do(func() {
+		_, thisFile, _, ok := runtime.Caller(0)
+		if !ok {
+			projectRootErr = errors.New("unable to determine caller for project root lookup")
+			return
+		}
+		dir := filepath.Dir(thisFile)
+		for {
+			if _, err := os.Stat(filepath.Join(dir, "go.mod")); err == nil {
+				projectRoot = dir
+				return
+			}
+			parent := filepath.Dir(dir)
+			if parent == dir {
+				projectRootErr = errors.New("go.mod not found while searching for project root")
+				return
+			}
+			dir = parent
+		}
+	})
+	if projectRootErr != nil {
+		panic(projectRootErr)
+	}
+	return projectRoot
+}
+
 // TestContainerSetup is a wrapper for testcontainers that gives easy access to container-address and container-port
 type TestContainerSetup struct {
 	Container testcontainers.Container
diff --git a/test/pkg/source/mongodbtest/mongodb_test.go b/test/pkg/source/mongodbtest/mongodb_test.go
index 41326cc..009d8e5 100644
--- a/test/pkg/source/mongodbtest/mongodb_test.go
+++ b/test/pkg/source/mongodbtest/mongodb_test.go
@@ -29,7 +29,7 @@ const dumpKind = "mongodump"
 const restoreKind = "mongorestore"
 const dbName = "test"
 const collName = "testColl"
-const mongoImage = "docker.io/bitnami/mongodb:latest"
+const mongoImage = "docker.io/mongo:latest"
 const logString = "Waiting for connections"
 
 type MongoDumpAndRestoreTestSuite struct {
@@ -243,8 +243,8 @@ var mongoRequest = testcontainers.ContainerRequest{
 	Image:        mongoImage,
 	ExposedPorts: []string{mongoPort},
 	Env: map[string]string{
-		"MONGODB_ROOT_USERNAME": mongoUser,
-		"MONGODB_ROOT_PASSWORD": mongoPW,
+		"MONGO_INITDB_ROOT_USERNAME": mongoUser,
+		"MONGO_INITDB_ROOT_PASSWORD": mongoPW,
 	},
 	WaitingFor: wait.ForLog(logString),
 }
diff --git a/test/pkg/source/mysqltest/mysql_test.go b/test/pkg/source/mysqltest/mysql_test.go
index 11f3c87..4e45410 100644
--- a/test/pkg/source/mysqltest/mysql_test.go
+++ b/test/pkg/source/mysqltest/mysql_test.go
@@ -39,8 +39,8 @@ const tableName = "testTable"
 
 // mysql and psql are a bit picky when it comes to localhost, use ip instead
 const hostName = "127.0.0.1"
-const logString = "** Starting MySQL **"
-const mysqlImage = "docker.io/bitnami/mysql:5.7"
+const logString = "ready for connections"
+const mysqlImage = "docker.io/mysql:5.7"
 
 type MySQLDumpAndRestoreTestSuite struct {
 	suite.Suite
@@ -461,8 +461,6 @@ var mySQLRequest = testcontainers.ContainerRequest{
 		"MYSQL_DATABASE":      mySQLDatabase,
 		"MYSQL_USER":          mySQLUser,
 		"MYSQL_PASSWORD":      mySQLPw,
-		"JDBC_PARAMS":         "useSSL=false",
-		"MYSQL_EXTRA_FLAGS":   "--default-authentication-plugin=mysql_native_password --skip-ssl",
 	},
 	WaitingFor: wait.ForLog(logString),
 }
diff --git a/test/pkg/source/postgrestest/postgres_test.go b/test/pkg/source/postgrestest/postgres_test.go
index 33b78ba..fe24812 100644
--- a/test/pkg/source/postgrestest/postgres_test.go
+++ b/test/pkg/source/postgrestest/postgres_test.go
@@ -38,7 +38,7 @@ const dumpKind = "pgdump"
 // mysql and psql are a bit picky when it comes to localhost, use ip instead
 const hostName = "127.0.0.1"
 const dbDriver = "pgx"
-const pgImage = "docker.io/bitnami/postgresql:17"
+const pgImage = "docker.io/postgres:17"
 const plainKind = "plain"
 
 type PGDumpAndRestoreTestSuite struct {