chore(docker): add one-command local test compose

Add compose-local-test.yml to run onlogs, docker-socket-proxy, and logprinter together.

Document local docker testing commands in README.

Author: mamchurovskyy

README.md

@@ -94,4 +94,30 @@ Once done, just go to <your host> and login as "admin" with <any password>.
 ### Docket socket URL
 By default the app will connect using the raw unix socket. But this can be overriden via the ENV variable `DOCKER_HOST`. That way you can specify fully qualified URL to the socket or URL of an docker socket proxy.
 
-In `compose-socket-proxy.yml` you can see a sample compose file for starting the socket proxy. To use it in the app set `DOCKER_HOST=http://localhost:2375` in the ENV.
+In `compose-socket-proxy.yml` you can see a sample compose file for starting the socket proxy. To use it in the app set `DOCKER_HOST=http://localhost:2375` in the ENV.
+
+## Local Docker testing
+
+Use the local test compose to run `onlogs + socket-proxy + logprinter` together:
+
+```sh
+cd application
+docker compose -f compose-local-test.yml up --build
+```
+
+Open `http://localhost:2874` and login with:
+
+- Username: `admin`
+- Password: `admin`
+
+Stop containers:
+
+```sh
+docker compose -f compose-local-test.yml down
+```
+
+Stop and remove volumes too (clean state):
+
+```sh
+docker compose -f compose-local-test.yml down -v
+```

application/compose-local-test.yml

@@ -0,0 +1,49 @@
+name: onlogs-local-test
+
+services:
+  docker-socket-proxy:
+    image: tecnativa/docker-socket-proxy:0.3.0
+    container_name: docker-proxy
+    restart: unless-stopped
+    volumes:
+      - /var/run/docker.sock:/var/run/docker.sock:ro
+    environment:
+      - POST=0
+      - DELETE=0
+      - PUT=0
+      - GET=1
+      - CONTAINERS=1
+
+  onlogs:
+    build:
+      context: .
+      dockerfile: Dockerfile
+    image: onlogs:local
+    container_name: onlogs-local
+    restart: unless-stopped
+    depends_on:
+      - docker-socket-proxy
+    ports:
+      - "2874:2874"
+    environment:
+      - ADMIN_USERNAME=admin
+      - ADMIN_PASSWORD=admin
+      - ENV_NAME=local
+      - PORT=2874
+      - DOCKER_HOST=http://docker-socket-proxy:2375
+      - DOCKER_API_VERSION=1.46
+      - MAX_LOGS_SIZE=10GB
+    volumes:
+      - onlogs-leveldb:/leveldb
+      - /etc/hostname:/etc/hostname:ro
+
+  logprinter:
+    build:
+      context: ./logs_generator
+      dockerfile: Dockerfile
+    image: logprinter:local
+    container_name: logprinter
+    restart: unless-stopped
+
+volumes:
+  onlogs-leveldb: