fixing dependencies and cleaner Dockerfile

Dockerfile

@@ -1,6 +1,6 @@
 FROM python:3.9-slim
 
-RUN apt update && apt install openssh-server sudo vim less ack-grep rsync wget curl bash -y && rm -rf /var/lib/apt/lists/*
+RUN apt update && apt install curl -y && rm -rf /var/lib/apt/lists/*
 
 # We use Poetry for dependency management
 RUN curl -sSL https://raw.githubusercontent.com/python-poetry/poetry/master/get-poetry.py | POETRY_HOME=/opt/poetry python && \

poetry.lock

@@ -32,7 +32,7 @@ test = ["astroid", "pytest"]
 name = "autopep8"
 version = "1.5.7"
 description = "A tool that automatically formats Python code to conform to the PEP 8 style guide"
-category = "main"
+category = "dev"
 optional = false
 python-versions = "*"
 
@@ -251,22 +251,11 @@ category = "main"
 optional = false
 python-versions = ">=3.6"
 
-[[package]]
-name = "psutil"
-version = "5.8.0"
-description = "Cross-platform lib for process and system monitoring in Python."
-category = "main"
-optional = false
-python-versions = ">=2.6, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-
-[package.extras]
-test = ["ipaddress", "mock", "unittest2", "enum34", "pywin32", "wmi"]
-
 [[package]]
 name = "pycodestyle"
 version = "2.7.0"
 description = "Python style guide checker"
-category = "main"
+category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
 
@@ -342,10 +331,18 @@ full = ["aiofiles", "graphene", "itsdangerous", "jinja2", "python-multipart", "p
 name = "toml"
 version = "0.10.2"
 description = "Python Library for Tom's Obvious, Minimal Language"
-category = "main"
+category = "dev"
 optional = false
 python-versions = ">=2.6, !=3.0.*, !=3.1.*, !=3.2.*"
 
+[[package]]
+name = "typing-extensions"
+version = "3.10.0.0"
+description = "Backported and Experimental Type Hints for Python 3.5+"
+category = "main"
+optional = false
+python-versions = "*"
+
 [[package]]
 name = "uvicorn"
 version = "0.13.4"
@@ -357,6 +354,7 @@ python-versions = "*"
 [package.dependencies]
 click = ">=7.0.0,<8.0.0"
 h11 = ">=0.8"
+typing-extensions = {version = "*", markers = "python_version < \"3.8\""}
 
 [package.extras]
 standard = ["websockets (>=8.0.0,<9.0.0)", "watchgod (>=0.6)", "python-dotenv (>=0.13)", "PyYAML (>=5.1)", "httptools (>=0.1.0,<0.2.0)", "uvloop (>=0.14.0,!=0.15.0,!=0.15.1)", "colorama (>=0.4)"]
@@ -371,8 +369,8 @@ python-versions = ">=3.6.1"
 
 [metadata]
 lock-version = "1.1"
-python-versions = "^3.9"
-content-hash = "4aac483c4224c87270e69bff783cbad6256da6f7e330a7c0925868695aa20f4a"
+python-versions = "^3.7"
+content-hash = "92d54b567e9f97f0e1f80c7a8ab8fb64e17fe879a9f42ab695d8200c9e80e096"
 
 [metadata.files]
 addict = [
@@ -674,36 +672,6 @@ pillow = [
     {file = "Pillow-8.2.0-pp37-pypy37_pp73-win32.whl", hash = "sha256:e98eca29a05913e82177b3ba3d198b1728e164869c613d76d0de4bde6768a50e"},
     {file = "Pillow-8.2.0.tar.gz", hash = "sha256:a787ab10d7bb5494e5f76536ac460741788f1fbce851068d73a87ca7c35fc3e1"},
 ]
-psutil = [
-    {file = "psutil-5.8.0-cp27-cp27m-macosx_10_9_x86_64.whl", hash = "sha256:0066a82f7b1b37d334e68697faba68e5ad5e858279fd6351c8ca6024e8d6ba64"},
-    {file = "psutil-5.8.0-cp27-cp27m-manylinux2010_i686.whl", hash = "sha256:0ae6f386d8d297177fd288be6e8d1afc05966878704dad9847719650e44fc49c"},
-    {file = "psutil-5.8.0-cp27-cp27m-manylinux2010_x86_64.whl", hash = "sha256:12d844996d6c2b1d3881cfa6fa201fd635971869a9da945cf6756105af73d2df"},
-    {file = "psutil-5.8.0-cp27-cp27mu-manylinux2010_i686.whl", hash = "sha256:02b8292609b1f7fcb34173b25e48d0da8667bc85f81d7476584d889c6e0f2131"},
-    {file = "psutil-5.8.0-cp27-cp27mu-manylinux2010_x86_64.whl", hash = "sha256:6ffe81843131ee0ffa02c317186ed1e759a145267d54fdef1bc4ea5f5931ab60"},
-    {file = "psutil-5.8.0-cp27-none-win32.whl", hash = "sha256:ea313bb02e5e25224e518e4352af4bf5e062755160f77e4b1767dd5ccb65f876"},
-    {file = "psutil-5.8.0-cp27-none-win_amd64.whl", hash = "sha256:5da29e394bdedd9144c7331192e20c1f79283fb03b06e6abd3a8ae45ffecee65"},
-    {file = "psutil-5.8.0-cp36-cp36m-macosx_10_9_x86_64.whl", hash = "sha256:74fb2557d1430fff18ff0d72613c5ca30c45cdbfcddd6a5773e9fc1fe9364be8"},
-    {file = "psutil-5.8.0-cp36-cp36m-manylinux2010_i686.whl", hash = "sha256:74f2d0be88db96ada78756cb3a3e1b107ce8ab79f65aa885f76d7664e56928f6"},
-    {file = "psutil-5.8.0-cp36-cp36m-manylinux2010_x86_64.whl", hash = "sha256:99de3e8739258b3c3e8669cb9757c9a861b2a25ad0955f8e53ac662d66de61ac"},
-    {file = "psutil-5.8.0-cp36-cp36m-win32.whl", hash = "sha256:36b3b6c9e2a34b7d7fbae330a85bf72c30b1c827a4366a07443fc4b6270449e2"},
-    {file = "psutil-5.8.0-cp36-cp36m-win_amd64.whl", hash = "sha256:52de075468cd394ac98c66f9ca33b2f54ae1d9bff1ef6b67a212ee8f639ec06d"},
-    {file = "psutil-5.8.0-cp37-cp37m-macosx_10_9_x86_64.whl", hash = "sha256:c6a5fd10ce6b6344e616cf01cc5b849fa8103fbb5ba507b6b2dee4c11e84c935"},
-    {file = "psutil-5.8.0-cp37-cp37m-manylinux2010_i686.whl", hash = "sha256:61f05864b42fedc0771d6d8e49c35f07efd209ade09a5afe6a5059e7bb7bf83d"},
-    {file = "psutil-5.8.0-cp37-cp37m-manylinux2010_x86_64.whl", hash = "sha256:0dd4465a039d343925cdc29023bb6960ccf4e74a65ad53e768403746a9207023"},
-    {file = "psutil-5.8.0-cp37-cp37m-win32.whl", hash = "sha256:1bff0d07e76114ec24ee32e7f7f8d0c4b0514b3fae93e3d2aaafd65d22502394"},
-    {file = "psutil-5.8.0-cp37-cp37m-win_amd64.whl", hash = "sha256:fcc01e900c1d7bee2a37e5d6e4f9194760a93597c97fee89c4ae51701de03563"},
-    {file = "psutil-5.8.0-cp38-cp38-macosx_10_9_x86_64.whl", hash = "sha256:6223d07a1ae93f86451d0198a0c361032c4c93ebd4bf6d25e2fb3edfad9571ef"},
-    {file = "psutil-5.8.0-cp38-cp38-manylinux2010_i686.whl", hash = "sha256:d225cd8319aa1d3c85bf195c4e07d17d3cd68636b8fc97e6cf198f782f99af28"},
-    {file = "psutil-5.8.0-cp38-cp38-manylinux2010_x86_64.whl", hash = "sha256:28ff7c95293ae74bf1ca1a79e8805fcde005c18a122ca983abf676ea3466362b"},
-    {file = "psutil-5.8.0-cp38-cp38-win32.whl", hash = "sha256:ce8b867423291cb65cfc6d9c4955ee9bfc1e21fe03bb50e177f2b957f1c2469d"},
-    {file = "psutil-5.8.0-cp38-cp38-win_amd64.whl", hash = "sha256:90f31c34d25b1b3ed6c40cdd34ff122b1887a825297c017e4cbd6796dd8b672d"},
-    {file = "psutil-5.8.0-cp39-cp39-macosx_10_9_x86_64.whl", hash = "sha256:6323d5d845c2785efb20aded4726636546b26d3b577aded22492908f7c1bdda7"},
-    {file = "psutil-5.8.0-cp39-cp39-manylinux2010_i686.whl", hash = "sha256:245b5509968ac0bd179287d91210cd3f37add77dad385ef238b275bad35fa1c4"},
-    {file = "psutil-5.8.0-cp39-cp39-manylinux2010_x86_64.whl", hash = "sha256:90d4091c2d30ddd0a03e0b97e6a33a48628469b99585e2ad6bf21f17423b112b"},
-    {file = "psutil-5.8.0-cp39-cp39-win32.whl", hash = "sha256:ea372bcc129394485824ae3e3ddabe67dc0b118d262c568b4d2602a7070afdb0"},
-    {file = "psutil-5.8.0-cp39-cp39-win_amd64.whl", hash = "sha256:f4634b033faf0d968bb9220dd1c793b897ab7f1189956e1aa9eae752527127d3"},
-    {file = "psutil-5.8.0.tar.gz", hash = "sha256:0c9ccb99ab76025f2f0bbecf341d4656e9c1351db8cc8a03ccd62e318ab4b5c6"},
-]
 pycodestyle = [
     {file = "pycodestyle-2.7.0-py2.py3-none-any.whl", hash = "sha256:514f76d918fcc0b55c6680472f0a37970994e07bbb80725808c17089be302068"},
     {file = "pycodestyle-2.7.0.tar.gz", hash = "sha256:c389c1d06bf7904078ca03399a4816f974a1d590090fecea0c63ec26ebaf1cef"},
@@ -740,6 +708,11 @@ toml = [
     {file = "toml-0.10.2-py2.py3-none-any.whl", hash = "sha256:806143ae5bfb6a3c6e736a764057db0e6a0e05e338b5630894a5f779cabb4f9b"},
     {file = "toml-0.10.2.tar.gz", hash = "sha256:b3bda1d108d5dd99f4a20d24d9c348e91c4db7ab1b749200bded2f839ccbe68f"},
 ]
+typing-extensions = [
+    {file = "typing_extensions-3.10.0.0-py2-none-any.whl", hash = "sha256:0ac0f89795dd19de6b97debb0c6af1c70987fd80a2d62d1958f7e56fcc31b497"},
+    {file = "typing_extensions-3.10.0.0-py3-none-any.whl", hash = "sha256:779383f6086d90c99ae41cf0ff39aac8a7937a9283ce0a414e5dd782f4c94a84"},
+    {file = "typing_extensions-3.10.0.0.tar.gz", hash = "sha256:50b6f157849174217d0656f99dc82fe932884fb250826c18350e159ec6cdf342"},
+]
 uvicorn = [
     {file = "uvicorn-0.13.4-py3-none-any.whl", hash = "sha256:7587f7b08bd1efd2b9bad809a3d333e972f1d11af8a5e52a9371ee3a5de71524"},
     {file = "uvicorn-0.13.4.tar.gz", hash = "sha256:3292251b3c7978e8e4a7868f4baf7f7f7bb7e40c759ecc125c37e99cdea34202"},

pyproject.toml

@@ -6,13 +6,14 @@ authors = ["Zauberzeug GmbH"]
 license = "MIT"
 
 [tool.poetry.dependencies]
-python = "^3.9"
+python = "^3.7"
 justpy = "0.1.5"
 icecream = "^2.1.0"
 matplotlib = "^3.4.1"
-autopep8 = "^1.5.7"
+typing-extensions = "^3.10.0"
 
 [tool.poetry.dev-dependencies]
+autopep8 = "^1.5.7"
 debugpy = "^1.3.0"
 
 [build-system]