v1.0.0: docker: add docker compose element

Signed-off-by: GnomeZworc <nicolas.boufidjeline@g3e.fr>

.gitignore

@@ -1,2 +1,6 @@
 # build directory
 build/
+
+# docker dev build
+docker/
+docker-compose.yml

README.md

@@ -14,3 +14,36 @@ v0.0.0: version
 
 - Golang
 - Docker
+
+### with docker compose
+
+```bash
+cat <<ENDFILE > docker-compose.yml
+version: '3.1'
+
+services:
+  postgres:
+    image: postgres:15.2-alpine3.17
+    restart: unless-stopped
+    environment:
+      POSTGRES_USER: 'acc'
+      POSTGRES_PASSWORD: 'totor'
+      POSTGRES_DB: 'accounts'
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+  users:
+    build:
+      context: .
+      target: develop
+    ports:
+      - 127.0.0.1:2300:1222
+    volumes:
+      - ./docker/keys:/keys
+    depends_on:
+      postgres:
+        condition: service_healthy
+ENDFILE
+```