diff --git a/integrations/mysql.ini b/integrations/mysql.ini
index 2818e2bf3..82acc2443 100644
--- a/integrations/mysql.ini
+++ b/integrations/mysql.ini
@@ -3,7 +3,7 @@ RUN_MODE = prod
 
 [database]
 DB_TYPE  = mysql
-HOST     = 127.0.0.1:3306
+HOST     = mysql:3306
 NAME     = testgitea
 USER     = root
 PASSWD   =
diff --git a/integrations/pgsql.ini b/integrations/pgsql.ini
index 2deaa1963..fe979a653 100644
--- a/integrations/pgsql.ini
+++ b/integrations/pgsql.ini
@@ -3,7 +3,7 @@ RUN_MODE = prod
 
 [database]
 DB_TYPE  = postgres
-HOST     = 127.0.0.1:5432
+HOST     = pgsql:5432
 NAME     = testgitea
 USER     = postgres
 PASSWD   = postgres
diff --git a/integrations/sqlite.ini b/integrations/sqlite.ini
index c771507a7..799a44b47 100644
--- a/integrations/sqlite.ini
+++ b/integrations/sqlite.ini
@@ -3,11 +3,6 @@ RUN_MODE = prod
 
 [database]
 DB_TYPE  = sqlite3
-HOST     = 127.0.0.1:3306
-NAME     = testgitea
-USER     = gitea
-PASSWD   =
-SSL_MODE = disable
 PATH     = :memory:
 
 [repository]
diff --git a/models/gpg_key.go b/models/gpg_key.go
index 8d1051100..08573c1c7 100644
--- a/models/gpg_key.go
+++ b/models/gpg_key.go
@@ -276,11 +276,7 @@ func DeleteGPGKey(doer *User, id int64) (err error) {
 		return err
 	}
 
-	if err = sess.Commit(); err != nil {
-		return err
-	}
-
-	return nil
+	return sess.Commit()
 }
 
 // CommitVerification represents a commit validation of signature
diff --git a/models/issue.go b/models/issue.go
index 2c385fd06..673d718ac 100644
--- a/models/issue.go
+++ b/models/issue.go
@@ -572,11 +572,7 @@ func (issue *Issue) ReadBy(userID int64) error {
 		return err
 	}
 
-	if err := setNotificationStatusReadIfUnread(x, userID, issue.ID); err != nil {
-		return err
-	}
-
-	return nil
+	return setNotificationStatusReadIfUnread(x, userID, issue.ID)
 }
 
 func updateIssueCols(e Engine, issue *Issue, cols ...string) error {
diff --git a/models/login_source.go b/models/login_source.go
index e4dc77714..4778ccd65 100644
--- a/models/login_source.go
+++ b/models/login_source.go
@@ -509,10 +509,7 @@ func SMTPAuth(a smtp.Auth, cfg *SMTPConfig) error {
 	}
 
 	if ok, _ := c.Extension("AUTH"); ok {
-		if err = c.Auth(a); err != nil {
-			return err
-		}
-		return nil
+		return c.Auth(a)
 	}
 	return ErrUnsupportedLoginType
 }
diff --git a/models/migrations/v16.go b/models/migrations/v16.go
index 9cd4ef4da..a2d0d9e04 100644
--- a/models/migrations/v16.go
+++ b/models/migrations/v16.go
@@ -119,9 +119,5 @@ func addUnitsToTables(x *xorm.Engine) error {
 		}
 	}
 
-	if err := sess.Commit(); err != nil {
-		return err
-	}
-
-	return nil
+	return sess.Commit()
 }
diff --git a/models/migrations/v21.go b/models/migrations/v21.go
index e049727cb..890f4de22 100644
--- a/models/migrations/v21.go
+++ b/models/migrations/v21.go
@@ -51,8 +51,5 @@ func useNewPublickeyFormat(x *xorm.Engine) error {
 	}
 
 	f.Close()
-	if err = os.Rename(tmpPath, fpath); err != nil {
-		return err
-	}
-	return nil
+	return os.Rename(tmpPath, fpath)
 }
diff --git a/models/org.go b/models/org.go
index d43f15f9a..63d9c0e46 100644
--- a/models/org.go
+++ b/models/org.go
@@ -235,11 +235,7 @@ func DeleteOrganization(org *User) (err error) {
 		}
 	}
 
-	if err = sess.Commit(); err != nil {
-		return err
-	}
-
-	return nil
+	return sess.Commit()
 }
 
 func deleteOrg(e *xorm.Session, u *User) error {
diff --git a/models/ssh_key.go b/models/ssh_key.go
index 649c50be6..2d06c23f4 100644
--- a/models/ssh_key.go
+++ b/models/ssh_key.go
@@ -609,11 +609,7 @@ func RewriteAllPublicKeys() error {
 		defer f.Close()
 	}
 
-	if err = os.Rename(tmpPath, fPath); err != nil {
-		return err
-	}
-
-	return nil
+	return os.Rename(tmpPath, fPath)
 }
 
 // ________                .__                 ____  __.
diff --git a/modules/context/repo.go b/modules/context/repo.go
index 72e922aaf..ef70628be 100644
--- a/modules/context/repo.go
+++ b/modules/context/repo.go
@@ -166,7 +166,7 @@ func RedirectToRepo(ctx *Context, redirectRepoID int64) {
 func RepoIDAssignment() macaron.Handler {
 	return func(ctx *Context) {
 		var (
-			err   error
+			err error
 		)
 
 		repoID := ctx.ParamsInt64(":repoid")
diff --git a/modules/lfs/content_store.go b/modules/lfs/content_store.go
index 94bb10136..3e1b2f345 100644
--- a/modules/lfs/content_store.go
+++ b/modules/lfs/content_store.go
@@ -70,10 +70,7 @@ func (s *ContentStore) Put(meta *models.LFSMetaObject, r io.Reader) error {
 		return errHashMismatch
 	}
 
-	if err := os.Rename(tmpPath, path); err != nil {
-		return err
-	}
-	return nil
+	return os.Rename(tmpPath, path)
 }
 
 // Exists returns true if the object exists in the content store.
diff --git a/modules/log/file.go b/modules/log/file.go
index fe6c54ec3..18e82f722 100644
--- a/modules/log/file.go
+++ b/modules/log/file.go
@@ -110,10 +110,7 @@ func (w *FileLogWriter) StartLogger() error {
 		return err
 	}
 	w.mw.SetFd(fd)
-	if err = w.initFd(); err != nil {
-		return err
-	}
-	return nil
+	return w.initFd()
 }
 
 func (w *FileLogWriter) docheck(size int) {