diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 05bf6d7..4fb7146 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,29 +1,32 @@
 workflow:
   name: 'CPF: $CPF'
 
-image: selenium/standalone-chromium:126.0
-
-# Change pip's cache directory to be inside the project directory since we can
-# only cache local items.
 variables:
     PIP_CACHE_DIR: "$CI_PROJECT_DIR/.cache/pip"
 
-# Pip's cache doesn't store the python packages
-# https://pip.pypa.io/en/stable/reference/pip_install/#caching
-#
-# If you want to also cache the installed packages, you have to install
-# them in a virtualenv and cache it as well.
 cache:
   paths:
     - .cache/pip
+    - .cache/pip3
     - venv/
 
 stages:
+    - build
     - coverage_report
     - relatorio
 
+# Stage to build the Docker image
+build:
+    stage: build
+    script:
+        - docker build -t chrome-with-selenium:latest .
+    artifacts:
+        paths:
+            - chrome-with-selenium.tar
+    when: always
+
 before_script:
-  - python -V
+  - python3 -V
   - pip install virtualenv
   - virtualenv venv
   - source venv/bin/activate
@@ -33,8 +36,9 @@ before_script:
 
 coverage_html:
     stage: coverage_report
+    image: chrome-with-selenium:latest
     script:
-        - python coverage_test.py
+        - python3 coverage_test.py
         - mkdir -p public/coverage_report
         - mv coverage_report public/coverage_report
     artifacts:
@@ -47,8 +51,9 @@ coverage_html:
 
 relatorio:
     stage: relatorio
+    image: chrome-with-selenium:latest
     script:
-        - python ./ir.py --do check_environment_variables
-        # - python ./ir.py --do busca_trades_e_faz_merge_operacoes
-        - python ./ir.py --do calculo_ir --numero_de_meses 999
-    retry: 2
+        - python3 ./ir.py --do check_environment_variables
+        # - python3 ./ir.py --do busca_trades_e_faz_merge_operacoes
+        - python3 ./ir.py --do calculo_ir --numero_de_meses 999
+    retry: 2
\ No newline at end of file
diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..f827074
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,21 @@
+FROM python:3.10
+
+# install google chrome
+RUN wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | apt-key add -
+RUN sh -c 'echo "deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main" >> /etc/apt/sources.list.d/google-chrome.list'
+RUN apt-get -y update
+RUN apt-get install -y google-chrome-stable
+
+# install chromedriver
+RUN apt-get install -yqq unzip
+RUN wget -O /tmp/chromedriver.zip http://chromedriver.storage.googleapis.com/`curl -sS chromedriver.storage.googleapis.com/LATEST_RELEASE`/chromedriver_linux64.zip
+RUN unzip /tmp/chromedriver.zip chromedriver -d /usr/local/bin/
+
+# set display port to avoid crash
+ENV DISPLAY=:99
+
+# upgrade pip
+RUN pip install --upgrade pip
+
+# install selenium
+RUN pip install selenium
\ No newline at end of file
diff --git a/Makefile b/Makefile
index 97a59b3..325d733 100644
--- a/Makefile
+++ b/Makefile
@@ -15,11 +15,11 @@ reqs:
 	pip freeze > requirements.txt
 
 coverage:
-	python coverage_test.py
+	python3 coverage_test.py
 
 test:
 	pytest
 
 run:
-	- python ./ir.py --do importar_negociacoes
-	- python ./ir.py --do calculo_ir --numero_de_meses 99
+	- python3 ./ir.py --do importar_negociacoes
+	- python3 ./ir.py --do calculo_ir --numero_de_meses 99
diff --git a/README.md b/README.md
index 5c4a49c..eb5c0cd 100644
--- a/README.md
+++ b/README.md
@@ -21,10 +21,10 @@
  - Configurar as variaveis de ambiente conforme (https://github.com/guilhermecgs/ir/blob/master/tests/test_environment_variables.py)
  - Voce pode executar tudo localmente e ver os resultados. Se quiser envio por email (SMTP), recomendo usar o https://elasticemail.com/ gratuitamente
  - Executar os comandos abaixo:
-    - python ./ir.py --do check_environment_variables
-    - python ./ir.py --do busca_trades_e_faz_merge_operacoes
-    - python ./ir.py --do calculo_ir
-    - python ./ir.py --do importar_negociacoes
+    - python3 ./ir.py --do check_environment_variables
+    - python3 ./ir.py --do busca_trades_e_faz_merge_operacoes
+    - python3 ./ir.py --do calculo_ir
+    - python3 ./ir.py --do importar_negociacoes
 
    
 ## exemplo do relatorio gerado no seu email
@@ -56,7 +56,7 @@ Variáveis não definidas assumem os valores padrões definidos no arquivo `conf
 ![Exportar Negociações](imagens/exportar-negociacao.png)
 
 2. Copie o arquivo exportado para pasta `importar`
-3. Execute o comando para importar os arquivos: `python ./ir.py --do importar_negociacoes`
+3. Execute o comando para importar os arquivos: `python3 ./ir.py --do importar_negociacoes`
 4. Remova os arquivos da pasta `importar`
 
 ## disclaimer