diff --git a/.github/workflows/run-tests.yml b/.github/workflows/run-tests.yml
new file mode 100644
index 000000000..3e23d1910
--- /dev/null
+++ b/.github/workflows/run-tests.yml
@@ -0,0 +1,133 @@
+name: Run spec tests and linter
+
+defaults:
+  run:
+    shell: zsh {0}
+
+env:
+  TEST_PRESET_TYPE: "minimal"
+  DEFAULT_BRANCH: "dev"
+
+# Run tests on workflow_Dispatch
+on: 
+  push:
+    branches:
+      - dev 
+      - master
+  pull_request:    
+  workflow_dispatch:
+    inputs:
+      test_preset_type:
+        default: minimal
+        description: Type of test to run, either mainnet or minimal
+        type: string
+        required: true
+      commitRef:
+        description: The branch, tag or SHA to checkout and build from
+        default: dev
+        required: true  
+  schedule:
+    - cron: '0 0 * * *'
+
+jobs:
+  precleanup:
+      runs-on: self-hosted
+      if: always()
+      steps:
+        - name: 'Cleanup build folder'
+          run: |
+            ls -la ./
+            rm -rf ./* || true
+            rm -rf ./.??* || true
+            ls -la ./
+  setup-env:
+    runs-on: self-hosted
+    needs: precleanup
+    steps:
+      - name: Checkout this repo
+        uses: actions/checkout@v3.2.0
+        with:
+          ref: ${{ github.event.inputs.commitRef || env.DEFAULT_BRANCH }}
+      - uses: actions/cache@v3.2.2
+        id: cache-git
+        with:
+          path: ./*
+          key: ${{ github.sha }}
+
+  table_of_contents:
+   runs-on: self-hosted
+   needs: setup-env
+   steps:
+      - uses: actions/cache@v3.2.2
+        id: restore-build
+        with:
+          path: ./*
+          key: ${{ github.sha }}
+      - name: Check table of contents
+        run: sudo npm install -g doctoc@2 && make check_toc
+
+  codespell:
+   runs-on: self-hosted
+   needs: setup-env
+   steps:
+      - name: Check codespell
+        run: pip install 'codespell<3.0.0,>=2.0.0' --user &&  make codespell
+
+  lint:
+    runs-on: self-hosted
+    needs: setup-env
+    steps:
+      - name: Run linter for pyspec
+        run: make lint
+      - name: Run linter for test generators
+        run: make lint_generators
+
+  pyspec-tests:
+    runs-on: self-hosted
+    needs: [setup-env,lint,codespell,table_of_contents]
+    strategy:
+      matrix:
+        version: ["phase0", "altair", "bellatrix", "capella", "eip4844"]
+    steps:
+      - uses: actions/cache@v3.2.2
+        id: restore-build
+        with:
+          path: ./*
+          key: ${{ github.sha }}
+      - name: set TEST_PRESET_TYPE
+        if: github.event.inputs.test_preset_type != ''        
+        run: |
+          echo "spec_test_preset_type=${{ github.event.inputs.test_preset_type || env.TEST_PRESET_TYPE }}" >> $GITHUB_ENV
+      - name: set TEST_PRESET_TYPE
+        if: ${{ (github.event_name == 'push' && github.ref_name != 'master') || github.event_name == 'pull_request' }}
+        run: |
+          echo "spec_test_preset_type=${{ env.TEST_PRESET_TYPE}}" >> $GITHUB_ENV    
+      - name: set TEST_PRESET_TYPE
+        if: ${{ github.event_name == 'push' && github.ref_name == 'master' }}
+        run: |
+          echo "spec_test_preset_type=mainnet" >> $GITHUB_ENV    
+      - name: set TEST_PRESET_TYPE
+        if: github.event.schedule=='0 0 * * *'
+        run: |
+          echo "spec_test_preset_type=mainnet" >> $GITHUB_ENV
+      - name: Install pyspec requirements
+        run: make install_test
+      - name: test-${{ matrix.version }}
+        run: make citest fork=${{ matrix.version }} TEST_PRESET_TYPE=${{env.spec_test_preset_type}}
+      - uses: actions/upload-artifact@v3
+        if: always()
+        with:
+          name: test-${{ matrix.version }}
+          path: tests/core/pyspec/test-reports
+
+  cleanup:
+      runs-on: self-hosted
+      needs: [setup-env,pyspec-tests,codespell,lint,table_of_contents]
+      if: always()
+      steps:
+        - name: 'Cleanup build folder'
+          run: |
+            ls -la ./
+            rm -rf ./* || true
+            rm -rf ./.??* || true
+            ls -la ./
\ No newline at end of file
diff --git a/Makefile b/Makefile
index 645ed7006..ac769b200 100644
--- a/Makefile
+++ b/Makefile
@@ -13,7 +13,7 @@ SOLIDITY_DEPOSIT_CONTRACT_SOURCE = ${SOLIDITY_DEPOSIT_CONTRACT_DIR}/deposit_cont
 SOLIDITY_FILE_NAME = deposit_contract.json
 DEPOSIT_CONTRACT_TESTER_DIR = ${SOLIDITY_DEPOSIT_CONTRACT_DIR}/web3_tester
 CONFIGS_DIR = ./configs
-
+TEST_PRESET_TYPE ?= minimal
 # Collect a list of generator names
 GENERATORS = $(sort $(dir $(wildcard $(GENERATOR_DIR)/*/.)))
 # Map this list of generator paths to "gen_{generator name}" entries
@@ -96,30 +96,30 @@ generate_tests: $(GENERATOR_TARGETS)
 
 # "make pyspec" to create the pyspec for all phases.
 pyspec:
-	. venv/bin/activate; python3 setup.py pyspecdev
+	python3 -m venv venv; . venv/bin/activate; python3 setup.py pyspecdev
 
 # installs the packages to run pyspec tests
 install_test:
 	python3 -m venv venv; . venv/bin/activate; python3 -m pip install -e .[lint]; python3 -m pip install -e .[test]
 
-# Testing against `minimal` config by default
+# Testing against `minimal` or `mainnet` config by default
 test: pyspec
 	. venv/bin/activate; cd $(PY_SPEC_DIR); \
-	python3 -m pytest -n 4 --disable-bls --cov=eth2spec.phase0.minimal --cov=eth2spec.altair.minimal --cov=eth2spec.bellatrix.minimal --cov=eth2spec.capella.minimal --cov=eth2spec.eip4844.minimal --cov-report="html:$(COV_HTML_OUT)" --cov-branch eth2spec
+	python3 -m pytest -n 4 --disable-bls --cov=eth2spec.phase0.$(TEST_PRESET_TYPE) --cov=eth2spec.altair.$(TEST_PRESET_TYPE) --cov=eth2spec.bellatrix.$(TEST_PRESET_TYPE) --cov=eth2spec.capella.$(TEST_PRESET_TYPE) --cov=eth2spec.eip4844.$(TEST_PRESET_TYPE) --cov-report="html:$(COV_HTML_OUT)" --cov-branch eth2spec
 
-# Testing against `minimal` config by default
+# Testing against `minimal` or `mainnet` config by default
 find_test: pyspec
 	. venv/bin/activate; cd $(PY_SPEC_DIR); \
-	python3 -m pytest -k=$(K) --disable-bls --cov=eth2spec.phase0.minimal --cov=eth2spec.altair.minimal --cov=eth2spec.bellatrix.minimal --cov=eth2spec.capella.minimal --cov=eth2spec.eip4844.minimal --cov-report="html:$(COV_HTML_OUT)" --cov-branch eth2spec
+	python3 -m pytest -k=$(K) --disable-bls --cov=eth2spec.phase0.$(TEST_PRESET_TYPE) --cov=eth2spec.altair.$(TEST_PRESET_TYPE) --cov=eth2spec.bellatrix.$(TEST_PRESET_TYPE) --cov=eth2spec.capella.$(TEST_PRESET_TYPE) --cov=eth2spec.eip4844.$(TEST_PRESET_TYPE) --cov-report="html:$(COV_HTML_OUT)" --cov-branch eth2spec
 
 citest: pyspec
 	mkdir -p $(TEST_REPORT_DIR);
 ifdef fork
 	. venv/bin/activate; cd $(PY_SPEC_DIR); \
-	python3 -m pytest -n 4 --bls-type=milagro --fork=$(fork) --junitxml=test-reports/test_results.xml eth2spec
+	python3 -m pytest -n 16 --bls-type=milagro --preset=$(TEST_PRESET_TYPE) --fork=$(fork) --junitxml=test-reports/test_results.xml eth2spec
 else
 	. venv/bin/activate; cd $(PY_SPEC_DIR); \
-	python3 -m pytest -n 4 --bls-type=milagro --junitxml=test-reports/test_results.xml eth2spec
+	python3 -m pytest -n 16 --bls-type=milagro  --preset=$(TEST_PRESET_TYPE) --junitxml=test-reports/test_results.xml eth2spec
 endif
 
 
@@ -135,7 +135,7 @@ check_toc: $(MARKDOWN_FILES:=.toc)
 	rm $*.tmp
 
 codespell:
-	codespell . --skip ./.git -I .codespell-whitelist
+	codespell . --skip "./.git,./venv,$(PY_SPEC_DIR)/.mypy_cache" -I .codespell-whitelist
 
 # TODO: add future protocol upgrade patch packages to linting.
 # NOTE: we use `pylint` just for catching unused arguments in spec code