diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index ccc5446..311ebcd 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -2,9 +2,43 @@ include:
     - template: Jobs/Code-Quality.gitlab-ci.yml
 
 stages:
+    - build
     - test
+    - trigger_build_peerplays
+
+build:
+  stage: build
+  script:
+    - rm -rf .git/modules/vendor ./vendor
+    - git submodule sync
+    - git submodule update --init --recursive
+    - rm -rf build
+    - mkdir build
+    - cd build
+    - cmake -DCMAKE_BUILD_TYPE=Release ..
+    - make -j$(nproc)
+  artifacts:
+    untracked: true
+    paths:
+      - build/tests/
+  tags:
+    - builder-fc
+
+test:
+  stage: test
+  dependencies:
+    - build
+  script:
+    - ./build/tests/all_test
+  tags:
+    - builder-fc
+  when:
+    - manual
 
 trigger_build_peerplays:
-  stage: test
+  stage: trigger_build_peerplays
+  dependencies:
+    - test
   script:
     - "curl -X POST -F token=$CI_JOB_TOKEN -F ref=$REF_NAME https://gitlab.com/api/v4/projects/10735589/trigger/pipeline"
+    
\ No newline at end of file
diff --git a/include/fc/config.hpp b/include/fc/config.hpp
index d08eaf1..8e64a1d 100644
--- a/include/fc/config.hpp
+++ b/include/fc/config.hpp
@@ -3,7 +3,12 @@
   #define FC_PACK_MAX_DEPTH 1000
 #endif
 
+#ifndef FC_MAX_STRING_OBJECT_DEPTH
+  // how many levels of nested objects are proceed for string functions
+#define FC_MAX_STRING_OBJECT_DEPTH 200
+#endif
+
 #ifndef FC_MAX_LOG_OBJECT_DEPTH
    // how many levels of nested objects are displayed in log messages
-   #define FC_MAX_LOG_OBJECT_DEPTH 200
+   #define FC_MAX_LOG_OBJECT_DEPTH 1000
 #endif
\ No newline at end of file
diff --git a/include/fc/log/gelf_appender.hpp b/include/fc/log/gelf_appender.hpp
index ba81c3d..1df2b2a 100755
--- a/include/fc/log/gelf_appender.hpp
+++ b/include/fc/log/gelf_appender.hpp
@@ -15,7 +15,7 @@ namespace fc
     {
       string endpoint = "127.0.0.1:12201";
       string host = "fc"; // the name of the host, source or application that sent this message (just passed through to GELF server)
-      uint32_t max_object_depth;
+      uint32_t max_object_depth = FC_MAX_LOG_OBJECT_DEPTH;
     };
 
     gelf_appender(const variant& args);
diff --git a/include/fc/string.hpp b/include/fc/string.hpp
index 13e10da..2fce7b0 100755
--- a/include/fc/string.hpp
+++ b/include/fc/string.hpp
@@ -2,6 +2,7 @@
 #include <fc/utility.hpp>
 #include <fc/fwd.hpp>
 #include <fc/optional.hpp>
+#include <fc/config.hpp>
 
 #ifndef USE_FC_STRING
 #include <string>
@@ -25,7 +26,7 @@ namespace fc
 
   typedef fc::optional<fc::string> ostring;
   class variant_object;
-  fc::string format_string( const fc::string&, const variant_object&, uint32_t max_object_depth = 200 );
+  fc::string format_string( const fc::string&, const variant_object&, uint32_t max_object_depth = FC_MAX_STRING_OBJECT_DEPTH );
   fc::string trim( const fc::string& );
   fc::string to_lower( const fc::string& );
   string trim_and_normalize_spaces( const string& s );
diff --git a/src/log/file_appender.cpp b/src/log/file_appender.cpp
index f499ed4..1840c34 100755
--- a/src/log/file_appender.cpp
+++ b/src/log/file_appender.cpp
@@ -168,7 +168,8 @@ namespace fc {
      filename(p),
      flush(true),
      rotate(false),
-     rotation_compression(false)
+     rotation_compression(false),
+     max_object_depth(FC_MAX_LOG_OBJECT_DEPTH)
    {}
 
    file_appender::file_appender( const variant& args ) :
diff --git a/tests/io/json_tests.cpp b/tests/io/json_tests.cpp
index e06f51b..3bc16d8 100644
--- a/tests/io/json_tests.cpp
+++ b/tests/io/json_tests.cpp
@@ -335,7 +335,7 @@ BOOST_AUTO_TEST_CASE(recursion_test)
 BOOST_AUTO_TEST_CASE(rethrow_test)
 {
    fc::variants biggie;
-   for( int i = 0; i < 250; i++ )
+   for( int i = 0; i < 1010; i++ )
    {
       fc::variant tmp( std::move(biggie) );
       biggie.reserve(1);