added docker as an example

Dockerfile

@@ -0,0 +1,28 @@
+# Nix builder
+FROM nixos/nix:latest AS builder
+
+# Copy our source and setup our working dir.
+COPY . /tmp/build
+WORKDIR /tmp/build
+
+# Build our Nix environment
+RUN nix \
+    --extra-experimental-features "nix-command flakes" \
+    --option filter-syscalls false \
+    build
+
+# Copy the Nix store closure into a directory. The Nix store closure is the
+# entire set of Nix store values that we need for our build.
+RUN mkdir /tmp/nix-store-closure
+RUN cp -r $(nix-store -qR result/) /tmp/nix-store-closure
+
+# Final image is based on scratch. We copy a bunch of Nix dependencies
+# but they're fully self-contained so we don't need Nix anymore.
+FROM scratch
+
+WORKDIR /app
+
+# Copy /nix/store
+COPY --from=builder /tmp/nix-store-closure /nix/store
+COPY --from=builder /tmp/build/result /app
+CMD ["/app/bin/testdata"]

docker-compose.yaml

@@ -0,0 +1,15 @@
+services:
+  testdata:
+    image: result/latest
+
+    build:
+      dockerfile: ./Dockerfile
+
+    environment:
+          TESTDATA_HOST: 0.0.0.0
+          TESTDATA_PORT: 1234
+          TESTDATA_CONFIG: ./config.json
+    volumes:
+      - ./config.json:/app/config.json
+      - ./db.json:/app/db.json
+      - ./log.jsonl:/app/log.jsonl

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "testdata"
-version = "1.1.0"
+version = "1.2.0"
 requires-python = "~=3.12, <4"
 dependencies = [
     "fastapi~=0.115.3",
@@ -31,7 +31,7 @@ where = ["src"]
 testdata = ["py.typed"]
 
 [tool.autopep8]
-max_line_length = 175
+max_line_length = 150
 
 [tool.pylint.'MESSAGES CONTROL']
 disable = [

src/testdata/main.py

@@ -1,3 +1,4 @@
+import os
 import sys
 import argparse
 import asyncio
@@ -11,9 +12,21 @@ def parse_args(args: list[str]):
 
     parser = argparse.ArgumentParser(formatter_class=formatter)
 
-    parser.add_argument('-c', '--config', type=argparse.FileType('r'), default='./config.json', help='Path to config file in JSON format.', )
-    parser.add_argument('-l', '--listen', type=str, default='0.0.0.0', help='IP on which to listen.')
-    parser.add_argument('-p', '--port', type=int, default='8080', help='Port on which to serve the webserver.')
+    parser.add_argument(
+        '-c', '--config', type=argparse.FileType('r'),
+        default=os.environ['TESTDATA_CONFIG'] if 'TESTDATA_CONFIG' in os.environ else './config.json',
+        help='Path to config file in JSON format.'
+    )
+    parser.add_argument(
+        '-l', '--listen', type=str,
+        default=os.environ['TESTDATA_HOST'] if 'TESTDATA_HOST' in os.environ else '0.0.0.0',
+        help='IP on which to listen.'
+    )
+    parser.add_argument(
+        '-p', '--port', type=int,
+        default=os.environ['TESTDATA_PORT'] if 'TESTDATA_PORT' in os.environ else 8080,
+        help='Port on which to serve the webserver.'
+    )
 
     return parser.parse_args(args)