Update required Python to 3.7 (#223)

Dockerfile

@@ -1,16 +1,5 @@
 # syntax=docker/dockerfile:1
-FROM coinor/cylp
-RUN ln -s /usr/bin/python3 /usr/bin/python && ln -s /usr/bin/pip3 /usr/bin/pip
-RUN --mount=type=cache,target=/root/.cache/pip pip3 install cvxpy ray numpy pandas tqdm matplotlib graphviz
-
-# # install CoinOR
-# ARG DEBIAN_FRONTEND="noninteractive"
-# ENV TZ="America/Los_Angeles"
-# RUN --mount=type=cache,target=/var/cache/apt apt update \
-#     && apt-get install --no-install-recommends -y git wget ca-certificates build-essential gcc g++ gfortran pkg-config libblas-dev liblapack-dev coinor-libcbc-dev libz-dev \
-#     && apt-get clean \
-#     && rm -rf /var/lib/apt/lists/*
-# RUN --mount=type=cache,target=/root/.cache/pip pip install numpy && pip install cylp
+FROM python:3.10-slim
 
 # increase number of open files and concurrent TCP connections
 RUN (echo 'net.ipv4.ip_local_port_range = 12000 65535' >> /etc/sysctl.conf) \
@@ -23,7 +12,7 @@ RUN (echo 'net.ipv4.ip_local_port_range = 12000 65535' >> /etc/sysctl.conf) \
 
 # install apt packages
 RUN --mount=type=cache,target=/var/cache/apt apt update \
-    && apt-get install --no-install-recommends -y git wget ca-certificates build-essential rsync graphviz \
+    && apt-get install --no-install-recommends -y git wget ca-certificates build-essential graphviz \
     && apt-get clean \
     && rm -rf /var/lib/apt/lists/*
 

README.md

@@ -9,7 +9,7 @@ Skylark is composed of two components: A ReplicatorClient that runs locally on y
 This package represents both components as a single binary. Docker builds a single container with the GatewayDaemon and pushes it to the Github Container Registry (ghcr.io). After provisioning an instance, a GatewayDaemon is started by launching that container. Therefore, it's simple and fast to launch a new Gateway.
 
 ### Requirements
-* Python 3.8 or greater
+* Python 3.7 or greater
 * Docker
     * **Ensure you have authenticated your Github account with Docker**: https://docs.github.com/en/packages/working-with-a-github-packages-registry/working-with-the-container-registry#authenticating-to-the-container-registry
     * TLDR:

setup.py

@@ -5,7 +5,7 @@
     name="skylark",
     version="0.1",
     packages=["skylark"],
-    python_requires=">=3.8",
+    python_requires=">=3.7",
     install_requires=[
         "awscrt",
         "azure-identity",
@@ -43,9 +43,9 @@
             "matplotlib",
             "pandas",
             "questionary",
-            "ray",
             "typer",
         ],
+        "experiments": ["ray"],
         "test": ["black", "ipython", "jupyter_console", "pytest", "pytype"],
     },
     entry_points={"console_scripts": ["skylark=skylark.cli.cli:app"]},

skylark/compute/gcp/gcp_server.py

@@ -33,7 +33,7 @@ def __init__(
     def uuid(self):
         return f"{self.region_tag}:{self.gcp_instance_name}"
 
-    @lru_cache
+    @lru_cache(maxsize=1)
     def get_gcp_instance(self):
         instances = self.auth.get_gcp_instances(self.gcp_region)
         if "items" in instances:

skylark/compute/utils.py

@@ -3,7 +3,7 @@
 from skylark.utils import logger
 
 
-@lru_cache
+@lru_cache(maxsize=1)
 def query_which_cloud() -> str:
     if (
         subprocess.call(