diff --git a/.github/workflows/pytest.yml b/.github/workflows/pytest.yml
index 42306a9..368170a 100644
--- a/.github/workflows/pytest.yml
+++ b/.github/workflows/pytest.yml
@@ -23,18 +23,12 @@ jobs:
             **/*.py
       - name: Prepare python env
         if: ${{ steps.changed-files.outputs.all_changed_files }}
-        run: |
-          python -m venv env
-          source env/bin/activate
-          pip install -U pip
-          pip install -r test-requirements.txt
+        run: pip3 install -r requirements.devel.txt
       - name: Run unit tests (pytest)
         if: ${{ steps.changed-files.outputs.all_changed_files }}
-        run: bash -o pipefail -c 'source
-          env/bin/activate && pip3 install -r requirements.txt &&
-          pytest -vv --cov-report term-missing:skip-covered
-          --cov-report xml:/tmp/coverage.xml --junitxml=/tmp/pytest.xml --cov=alma_tests_cacher
-          tests/ | tee /tmp/pytest-coverage.txt'
+        run: pytest -v --cov
+              --cov-report xml:/tmp/coverage.xml --junitxml=/tmp/pytest.xml
+              --cov-report term-missing:skip-covered | tee /tmp/pytest-coverage.txt
       - name: Pytest coverage comment
         if: ${{ steps.changed-files.outputs.all_changed_files }}
         uses: MishaKav/pytest-coverage-comment@main
diff --git a/.github/workflows/syntax.yml b/.github/workflows/syntax.yml
index a2a0dbc..3a6537a 100644
--- a/.github/workflows/syntax.yml
+++ b/.github/workflows/syntax.yml
@@ -20,21 +20,15 @@ jobs:
             **/*.py
       - name: Prepare python env
         if: ${{ steps.changed-files.outputs.all_changed_files }}
-        run: |
-          python -m venv env
-          source env/bin/activate
-          pip install -U pip
-          pip install -r test-requirements.txt
-          pip install isort[colors] colorama black pylint
+        run: pip3 install -r requirements.devel.txt
       - name: Run pylint
         id: pylint
         if: ${{ steps.changed-files.outputs.all_changed_files }}
         run: |
-          delimiter='$(openssl rand -hex 8)'
-          echo 'report<<$(delimiter)' >> $GITHUB_OUTPUT
-          source env/bin/activate
+          delimiter=$(openssl rand -hex 8)
+          echo "report<<$delimiter" >> $GITHUB_OUTPUT
           pylint ${{ steps.changed-files.outputs.all_changed_files }} --exit-zero >> $GITHUB_OUTPUT
-          echo '$(delimiter)' >> $GITHUB_OUTPUT
+          echo $delimiter >> $GITHUB_OUTPUT
       - name: Post pylint output
         uses: mshick/add-pr-comment@v2
         if: ${{ steps.changed-files.outputs.all_changed_files }}
@@ -50,7 +44,7 @@ jobs:
           message-id: pylint-report
       - name: Run black
         if: ${{ steps.changed-files.outputs.all_changed_files }}
-        run: env/bin/black ${{ steps.changed-files.outputs.all_changed_files }} --check --diff --color
+        run: black ${{ steps.changed-files.outputs.all_changed_files }} --check --diff --color
       - name: Run isort
         if: ${{ steps.changed-files.outputs.all_changed_files }}
-        run: env/bin/isort ${{ steps.changed-files.outputs.all_changed_files }} --diff --color --check-only
+        run: isort ${{ steps.changed-files.outputs.all_changed_files }} --diff --color --check-only
diff --git a/.gitignore b/.gitignore
index b262089..bd67229 100644
--- a/.gitignore
+++ b/.gitignore
@@ -159,4 +159,4 @@ cython_debug/
 #  be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore
 #  and can be added to the global gitignore or merged into this file.  For a more nuclear
 #  option (not recommended) you can uncomment the following to ignore the entire idea folder.
-#.idea/
+.idea/
diff --git a/Dockerfile b/Dockerfile
index 6eaf7fe..8f29877 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,12 +1,26 @@
 FROM almalinux:9
 
-RUN mkdir -p /code && \
-    dnf update -y && \
-    dnf install git -y && \
-    dnf clean all
-RUN curl https://raw.githubusercontent.com/vishnubob/wait-for-it/master/wait-for-it.sh -o wait_for_it.sh && chmod +x wait_for_it.sh
-COPY ./requirements.txt /code/requirements.txt
-RUN cd /code && python3 -m venv env && source env/bin/activate && \
-    pip3 install --upgrade pip && pip3 install -r /code/requirements.txt --no-cache-dir
+RUN <<EOT
+  set -ex
+  umask 0077
+  mkdir -p ~/.ssh
+  printf 'Host github.com\n  StrictHostKeyChecking accept-new\n' >> ~/.ssh/config
+EOT
+
+RUN <<EOT
+  set -ex
+  dnf upgrade -y
+  dnf install -y git
+  dnf clean all
+EOT
+
 WORKDIR /code
-CMD ["/bin/bash", "-c", "source env/bin/activate && pip3 install --upgrade pip && pip3 install -r requirements.txt --no-cache-dir && python alma_tests_cacher.py"]
+COPY requirements.* .
+RUN <<EOT
+  set -ex
+  python3 -m ensurepip
+  pip3 install -r requirements.devel.txt
+  rm requirements.*
+EOT
+
+ADD --chmod=755 https://raw.githubusercontent.com/vishnubob/wait-for-it/master/wait-for-it.sh /
diff --git a/alma_tests_cacher/models.py b/alma_tests_cacher/models.py
index 2eb0378..0f24e95 100644
--- a/alma_tests_cacher/models.py
+++ b/alma_tests_cacher/models.py
@@ -19,6 +19,7 @@ class PackageTestRepository(BaseModel):
 
 
 class TestRepository(BaseModel):
+    __test__ = False
     id: Union[int, str]
     name: str
     url: str
diff --git a/docker-compose.yml b/docker-compose.yml
index 38d5f09..46bf4ee 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -1,18 +1,8 @@
-version: "3.9"
 services:
   cacher:
     image: alma-tests-cacher:latest
     build:
       context: .
-      dockerfile: Dockerfile
-    restart: on-failure
+    command: "python3 alma_tests_cacher.py"
     volumes:
-      - "./alma_tests_cacher:/code/alma_tests_cacher"
-      - "./alma_tests_cacher.py:/code/alma_tests_cacher.py"
-      - "./requirements.txt:/code/requirements.txt"
-      - "./vars.yaml:/code/vars.yaml"
-    command: "bash -c '/wait_for_it.sh web_server:8000 &&
-              source env/bin/activate &&
-              pip3 install --upgrade pip &&
-              pip3 install -r /code/requirements.txt --no-cache-dir &&
-              python alma_tests_cacher.py'"
+      - ".:/code"
diff --git a/pyproject.toml b/pyproject.toml
index 3502609..59483fa 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -5,7 +5,20 @@ split_on_trailing_comma = true
 [tool.black]
 line-length = 79
 skip-string-normalization = true
+# see https://black.readthedocs.io/en/stable/the_black_code_style/future_style.html#preview-style
 preview = true
+enable-unstable-feature = ["hug_parens_with_braces_and_square_brackets"]
 
 [tool.pylint]
 max-line-length = 80
+
+[tool.coverage.run]
+source = ['.']
+
+[tool.coverage.report]
+skip_empty = true
+include = ['alma_tests_cacher/*']
+
+[tool.pytest.ini_options]
+pythonpath = '.'
+testpaths = ['tests']
diff --git a/requirements.devel.txt b/requirements.devel.txt
new file mode 100644
index 0000000..2a613e0
--- /dev/null
+++ b/requirements.devel.txt
@@ -0,0 +1,9 @@
+-r requirements.txt
+
+pytest==8.1.1
+pytest-cov==4.1.0
+anyio==4.3.0
+
+isort[colors]==5.13.2
+black==24.3.0
+pylint==3.1.0
diff --git a/test-requirements.txt b/test-requirements.txt
deleted file mode 100644
index eb44ddf..0000000
--- a/test-requirements.txt
+++ /dev/null
@@ -1,5 +0,0 @@
--r requirements.txt
-
-pytest==7.4.3
-pytest-cov==4.1.0
-anyio==4.2.0