diff --git a/.golangci.yaml b/.golangci.yaml
index 093be30..0b125c3 100644
--- a/.golangci.yaml
+++ b/.golangci.yaml
@@ -3,3 +3,11 @@ run:
   # Exit code when at least one issue was found.
   # Default: 1
   issues-exit-code: 0
+
+# All available settings of specific linters.
+linters-settings:
+  errcheck:
+    # report about assignment of errors to blank identifier: `num, _ := strconv.Atoi(numStr)`.
+    # Such cases aren't reported by default.
+    # Default: false
+    check-blank: false
diff --git a/Makefile b/Makefile
index c04ac71..e63b089 100644
--- a/Makefile
+++ b/Makefile
@@ -57,9 +57,14 @@ docker/release:	## Build and release in a docker container.
 	fi
 
 compose/up:	## Start docker-compose (args: SVC: name of the service to exclude)
-	@echo "${GREEN} [*] =============== Docker Compose UP =============== ${RESET}"
+	@echo "${GREEN} [*] =============== Docker Compose Up =============== ${RESET}"
 	docker compose config --services | grep -v '${SVC}' | xargs docker compose up
 
+compose/up/min:	## Start docker-compose (args: SVC: name of the service to exclude)
+	@echo "${YELLOW} [*] =============== Docker Compose Up Minimum =============== ${RESET}"
+	docker compose config --services | grep -v 'clamav\|sandbox\|meta\|orchestrator\|postprocessor\|aggregator\|pe\|ui' \
+		| xargs docker compose up
+
 couchbase/start:	## Start Couchbase Server docker container.
 	$(eval COUCHBASE_CONTAINER_STATUS := $(shell docker container inspect -f '{{.State.Status}}' $(COUCHBASE_CONTAINER_NAME)))
 ifeq ($(COUCHBASE_CONTAINER_STATUS),running)
diff --git a/cmd/main.go b/cmd/main.go
index 09ba1dd..55ff055 100644
--- a/cmd/main.go
+++ b/cmd/main.go
@@ -103,7 +103,10 @@ func run(logger log.Logger) error {
 	uni := ut.New(en, en)
 	trans, _ := uni.GetTranslator("en")
 	validate := validator.New()
-	en_translations.RegisterDefaultTranslations(validate, trans)
+	err = en_translations.RegisterDefaultTranslations(validate, trans)
+	if err != nil {
+		return err
+	}
 
 	// Create a password securer for auth.
 	sec := password.New(sha256.New())
@@ -132,9 +135,6 @@ func run(logger log.Logger) error {
 	if cfg.SMTP.Server != "" {
 		smtpMailer = mailer.New(cfg.SMTP.Server, cfg.SMTP.Port, cfg.SMTP.User,
 			cfg.SMTP.Password)
-		if err != nil {
-			logger.Errorf("failed to connect to smtp server: %v", err)
-		}
 		emailTemplates, err = tpl.New(*flagTplFiles)
 		if err != nil {
 			return err
diff --git a/docker-compose.yaml b/docker-compose.yaml
index cd1a630..3e1d62d 100644
--- a/docker-compose.yaml
+++ b/docker-compose.yaml
@@ -3,7 +3,7 @@
 
 services:
   couchbase:
-    image: couchbase/server:7.2.0
+    image: couchbase/server:7.6.1
     ports:
       - "8091:8091"
       - "8092:8092"
@@ -14,7 +14,8 @@ services:
       - couchbase_data:/opt/couchbase/var
 
   nsqlookupd:
-    image: nsqio/nsq:v1.2.1
+    platform: linux/amd64
+    image: nsqio/nsq:v1.3.0
     command: >
       /nsqlookupd --log-level=error
     hostname: nsqlookupd
@@ -23,9 +24,11 @@ services:
       - 4161:4161
 
   nsqd:
-    image: nsqio/nsq:v1.2.1
+    platform: linux/amd64
+    image: nsqio/nsq:v1.3.0
     command: >
-      /nsqd --lookupd-tcp-address=nsqlookupd:4160 --broadcast-address=${EXTERNAL_IP} --max-msg-size=1413820683 --log-level=error
+      /nsqd --lookupd-tcp-address=nsqlookupd:4160 --broadcast-address=${EXTERNAL_IP} --max-msg-size=1413820683
+      --log-level=error
     hostname: nsqd
     depends_on:
       - nsqlookupd
@@ -34,7 +37,8 @@ services:
       - 4151:4151
 
   nsqadmin:
-    image: nsqio/nsq:v1.2.1
+    platform: linux/amd64
+    image: nsqio/nsq:v1.3.0
     command: >
       /nsqadmin --lookupd-http-address=nsqlookupd:4161 --log-level=error
     hostname: nsqadmin
@@ -44,6 +48,7 @@ services:
       - 4171:4171
 
   minio:
+    platform: linux/amd64
     image: minio/minio:latest
     ports:
       - "9000:9000"
@@ -56,6 +61,7 @@ services:
     command: server /data --console-address ":9001"
 
   ui:
+    platform: linux/amd64
     image: saferwall/ui:latest
     ports:
       - "3000:3000"
@@ -64,69 +70,71 @@ services:
       PUBLIC_AVATAR_API_URL: https://avatar.saferwall.com/{username}
 
   orchestrator:
+    platform: linux/amd64
     image: saferwall/orchestrator:latest
     environment:
       - SAFERWALL_DEPLOYMENT_KIND=dev
-    entrypoint: [ /saferwall/orchestrator-svc, -config, /saferwall/conf/ ]
+    entrypoint: [/saferwall/orchestrator-svc, -config, /saferwall/conf/]
     volumes:
-      - /samples:/samples
-      - /saferwall:/saferwall/storage
+      - samples:/samples
 
   aggregator:
+    platform: linux/amd64
     image: saferwall/aggregator:latest
     depends_on:
       - couchbase
     environment:
       - SAFERWALL_DEPLOYMENT_KIND=dev
-    entrypoint: [ /saferwall/aggregator-svc, -config, /saferwall/conf/ ]
+    entrypoint: [/saferwall/aggregator-svc, -config, /saferwall/conf/]
     restart: always
 
   postprocessor:
+    platform: linux/amd64
     image: saferwall/postprocessor:latest
     environment:
       - SAFERWALL_DEPLOYMENT_KIND=dev
-    entrypoint:
-      [
-        /saferwall/postprocessor-svc,
-        -config,
-        /saferwall/conf/
-      ]
+    entrypoint: [/saferwall/postprocessor-svc, -config, /saferwall/conf/]
     volumes:
-      - /samples:/samples
+      - samples:/samples
     restart: always
 
   pe:
+    platform: linux/amd64
     image: saferwall/pe:latest
     environment:
       - SAFERWALL_DEPLOYMENT_KIND=dev
-    entrypoint: [ /saferwall/pe-svc, -config, /saferwall/conf/ ]
+    entrypoint: [/saferwall/pe-svc, -config, /saferwall/conf/]
     volumes:
-      - /samples:/samples
+      - samples:/samples
 
   meta:
+    platform: linux/amd64
     image: saferwall/gometa:latest
     environment:
       - SAFERWALL_DEPLOYMENT_KIND=dev
-    entrypoint: [ /saferwall/meta-svc, -config, /saferwall/conf/ ]
+    entrypoint: [/saferwall/meta-svc, -config, /saferwall/conf/]
     volumes:
-      - /samples:/samples
+      - samples:/samples
 
   clamav:
+    platform: linux/amd64
     image: saferwall/goclamav:latest
     environment:
       - SAFERWALL_DEPLOYMENT_KIND=dev
-    entrypoint: [ /saferwall/clamav-svc, -config, /saferwall/conf/ ]
+    entrypoint: [/saferwall/clamav-svc, -config, /saferwall/conf/]
     volumes:
-      - /samples:/samples
+      - samples:/samples
 
   sandbox:
+    platform: linux/amd64
     image: saferwall/sandbox:latest
     environment:
       - SAFERWALL_DEPLOYMENT_KIND=dev
-    entrypoint: [ /saferwall/sandbox-svc, -config, /saferwall/conf/ ]
+    entrypoint: [/saferwall/sandbox-svc, -config, /saferwall/conf/]
     volumes:
-      - /samples:/samples
+      - samples:/samples
 
 volumes:
+  samples: null
   minio_data: null
   couchbase_data: null
diff --git a/internal/behavior/repostitory.go b/internal/behavior/repostitory.go
index 04c7213..a17acee 100644
--- a/internal/behavior/repostitory.go
+++ b/internal/behavior/repostitory.go
@@ -70,7 +70,7 @@ func (r repository) Get(ctx context.Context, id string, fields []string) (
 
 		behaviors := res.([]interface{})
 		b, _ := json.Marshal(behaviors[0])
-		json.Unmarshal(b, &behavior)
+		_ = json.Unmarshal(b, &behavior)
 	}
 
 	return behavior, err
@@ -118,7 +118,7 @@ func (r repository) Query(ctx context.Context, offset, limit int) (
 	for _, u := range res.([]interface{}) {
 		behavior := entity.Behavior{}
 		b, _ := json.Marshal(u)
-		json.Unmarshal(b, &behavior)
+		 _ = json.Unmarshal(b, &behavior)
 		behaviors = append(behaviors, behavior)
 	}
 	return behaviors, nil
diff --git a/internal/comment/service.go b/internal/comment/service.go
index 4542c2e..91dc6b1 100644
--- a/internal/comment/service.go
+++ b/internal/comment/service.go
@@ -1,4 +1,4 @@
-// Copyright 2021 Saferwall. All rights reserved.
+// Copyright 2018 Saferwall. All rights reserved.
 // Use of this source code is governed by Apache v2 license
 // license that can be found in the LICENSE file.
 
@@ -173,7 +173,7 @@ func (s service) Delete(ctx context.Context, id string) (Comment, error) {
 	}
 
 	// delete corresponsing activity.
-	if s.actSvc.DeleteWith(ctx, "comment", com.Username, id); err != nil {
+	if err = s.actSvc.DeleteWith(ctx, "comment", com.Username, id); err != nil {
 		return Comment{}, err
 	}
 
diff --git a/internal/file/repository.go b/internal/file/repository.go
index 109f27e..cd2334a 100644
--- a/internal/file/repository.go
+++ b/internal/file/repository.go
@@ -1,4 +1,4 @@
-// Copyright 2021 Saferwall. All rights reserved.
+// Copyright 2018 Saferwall. All rights reserved.
 // Use of this source code is governed by Apache v2 license
 // license that can be found in the LICENSE file.
 
@@ -150,7 +150,7 @@ func (r repository) Query(ctx context.Context, offset, limit int, fields []strin
 	for _, u := range res.([]interface{}) {
 		file := entity.File{}
 		b, _ := json.Marshal(u)
-		json.Unmarshal(b, &file)
+		 _ = json.Unmarshal(b, &file)
 		files = append(files, file)
 	}
 	return files, nil
diff --git a/internal/file/service.go b/internal/file/service.go
index 528a2cd..ad1e97e 100644
--- a/internal/file/service.go
+++ b/internal/file/service.go
@@ -405,7 +405,7 @@ func (s service) Unlike(ctx context.Context, sha256 string) error {
 		}
 
 		// delete corresponding activity.
-		if s.actSvc.DeleteWith(ctx, "like", user.ID(),
+		if err = s.actSvc.DeleteWith(ctx, "like", user.ID(),
 			sha256); err != nil {
 			return err
 		}
diff --git a/internal/server/server.go b/internal/server/server.go
index fbc4459..e557838 100644
--- a/internal/server/server.go
+++ b/internal/server/server.go
@@ -101,7 +101,7 @@ func BuildHandler(logger log.Logger, db *dbcontext.DB, sec password.Service,
 
 	// Register a custom fields validator.
 	validate := validator.New()
-	validate.RegisterValidation("username_or_email", validateUsernameOrEmail)
+	 _ = validate.RegisterValidation("username_or_email", validateUsernameOrEmail)
 	e.Validator = &CustomValidator{validator: validate}
 
 	// Register a custom binder.
diff --git a/internal/template/template.go b/internal/template/template.go
index 1b46c43..ee7fed9 100644
--- a/internal/template/template.go
+++ b/internal/template/template.go
@@ -1,4 +1,4 @@
-// Copyright 2021 Saferwall. All rights reserved.
+// Copyright 2018 Saferwall. All rights reserved.
 // Use of this source code is governed by Apache v2 license
 // license that can be found in the LICENSE file.
 
@@ -99,6 +99,6 @@ func (er EmailRequest) Execute(templateData interface{}, wr io.Writer) error {
 	if err := er.tpl.Execute(buf, templateData); err != nil {
 		return err
 	}
-	wr.Write(buf.Bytes())
-	return nil
+	_, err := wr.Write(buf.Bytes())
+	return err
 }
diff --git a/internal/user/api.go b/internal/user/api.go
index 9d439fc..55b70bb 100644
--- a/internal/user/api.go
+++ b/internal/user/api.go
@@ -658,13 +658,11 @@ func (r resource) email(c echo.Context) error {
 
 	err := r.service.UpdateEmail(ctx, req)
 	if err != nil {
-		if err != nil {
-			switch err {
-			case errWrongPassword:
-				return errors.Forbidden("")
-			default:
-				return err
-			}
+		switch err {
+		case errWrongPassword:
+			return errors.Forbidden("")
+		default:
+			return err
 		}
 	}
 
diff --git a/internal/user/repository.go b/internal/user/repository.go
index 272ebfc..308161f 100644
--- a/internal/user/repository.go
+++ b/internal/user/repository.go
@@ -158,7 +158,7 @@ func (r repository) GetByEmail(ctx context.Context, email string) (
 
 	user := entity.User{}
 	b, _ := json.Marshal(res.([]interface{})[0])
-	json.Unmarshal(b, &user)
+	_ = json.Unmarshal(b, &user)
 	return user, nil
 }
 
@@ -182,7 +182,7 @@ func (r repository) Query(ctx context.Context, offset, limit int) (
 	for _, u := range res.([]interface{}) {
 		user := entity.User{}
 		b, _ := json.Marshal(u)
-		json.Unmarshal(b, &user)
+		_ = json.Unmarshal(b, &user)
 		user.Email = ""
 		user.Password = ""
 		users = append(users, user)
diff --git a/internal/user/service.go b/internal/user/service.go
index 35a6e2b..aea58d2 100644
--- a/internal/user/service.go
+++ b/internal/user/service.go
@@ -445,7 +445,7 @@ func (s service) UnFollow(ctx context.Context, id string) error {
 		curUser.FollowingCount -= 1
 
 		// delete corresponding activity.
-		if s.actSvc.DeleteWith(ctx, "follow", curUser.Username,
+		if err = s.actSvc.DeleteWith(ctx, "follow", curUser.Username,
 			targetUser.Username); err != nil {
 			return err
 		}
@@ -456,10 +456,10 @@ func (s service) UnFollow(ctx context.Context, id string) error {
 		targetUser.FollowersCount -= 1
 	}
 
-	if s.repo.Update(ctx, curUser.User); err != nil {
+	if err = s.repo.Update(ctx, curUser.User); err != nil {
 		return err
 	}
-	if s.repo.Update(ctx, targetUser.User); err != nil {
+	if err = s.repo.Update(ctx, targetUser.User); err != nil {
 		return err
 	}