feat: add multi-nodes docker-compose deployment example

misc/docker-compose/README.md

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+# Exemple de déploiement multi-noeuds avec Docker-Compose
+
+Le répertoire `misc/docker-compose` contient un exemple de déploiement de Bouncer multi-noeuds avec:
+
+- 3 instances du service `bouncer-proxy`;
+- 1 instance du service `haproxy` en frontal en charge du load-balancing;
+- 1 instance du service `bouncer-admin`;
+- 1 serveur Redis.
+
+## Prérequis
+
+- [Docker Compose](https://docs.docker.com/compose/)
+
+## Étapes
+
+1. Se positionner dans le répertoire puis lancer l'environnement avec la commande `docker-compose`:
+
+    ```bash
+    cd misc/docker-compose
+    docker-compose up
+    ```
+
+2. Entrer dans le conteneur `bouncer-admin` puis créer un jeton d'accès:
+
+    ```bash
+    docker-compose exec bouncer-admin /bin/sh
+    bouncer auth create-token --role writer > .bouncer-token
+    ```
+
+3. Créer un proxy via le CLI:
+
+    ```bash
+    bouncer admin proxy create --proxy-name myproxy --proxy-to "https://www.cadoles.com/"
+    bouncer admin proxy update --proxy-name myproxy --proxy-enabled=true
+    ```
+
+4. Via votre navigateur, accéder à l'URL http://127.0.0.1:8080. La page du site Cadoles devrait s'afficher. Dans le log de la commande `docker-compose up` vous devriez voir que les requêtes sont routées à tour de rôle sur les 3 instances de Bouncer en exécution.

misc/docker-compose/bouncer/admin-key.json

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+{"d":"JuBw5OsGv3rPgVczxUgtJ6iUQ41LQu4Xpu-t8IKI_z8r-BZBlbndxidPmRlGZASLGL3rhY4qw6_ScFxakrMpCreO1RMU0kqtz--N48BXFnW5tEgr1voyyKP__bPssQNn6PgkoyAd11es7MEKlBff_DtGrcSkVRgU0zDZB-vIU0aNEIZPNw0icbYqc1u_QQNPpBU9cw6P33WHhzvfCVAkZKRszwznhiPM08n1vjpiA7e1kQ8a6OC4IFZBvohkmpmyOq1g1OLRABQ83YPCjGjCAejO-jEWkbLksp6rAl_YYpCvfBAjFV76JuZq4eh5IU82LsSfi3PGYBkhxWuLY779XQ","dp":"gljHOQowGK7fVn2DJizWtgRIDJuKpKnoX2PWNJUbm2WZwcEPZalAkxn7Y-w_reLVJZuRpfKEUMS-Tn3-CwI1ZjCHPqMPTXcoG0Pe2E-Z88jOs9lW4XSOASiiM980VIvkV1xCxDJkN3NsDFQ9j9kRGnKuMnsucCW3AKaU917hXNU","dq":"mqY19JcEBDnzS70_XkAsOKqPzemOScax66b-4N6zrsgeLVlRjHffY9uCAgBWzlxOidRdQN8q23ZJB4fqsKB2w00Iw7Jxx94IoAKGjKDT5iB48Y_kdKLAwSHRTXsqA9GG3po_H_JpP_EqX4TDBYtqQZuBD_tACP9HbLYMi_V2YU8","e":"AQAB","kty":"RSA","n":"sam0X0BGcuFwX8z3Wde8cv2o_zl6A9ghpkT0tCjw8qH3GNWrbAqzncSWdHBzoChBgAbuTOVs-ixYC0KeUhwFdc8Ul-jmKJWFaS8kIr3y4EH62-vLgMuIKfaxbsyUG6KMkJfnftge1jPO4ccddNej9msxcqTxu37dcgstutwtd6QkS9p5RrNbDBc8-Z7SQ4TuxJfP8msXRnCPJ-I44yszGdQF1Np2DXakJHVn8PBrDh3iSFwORw8jxNS4oS0OlBl5aSc0t5XkkaNcSU2a50SKts290w54fl6MPJ1sLnnznLy4uu37-nrfEUvqRLDZL9B1F82RM1dtLIIiN4gnSrMlpQ","p":"wOmFPhAT_wXWzMuwtEdYIer3-CiOWxFKpFL09eEJkJ29MIUchEaoiJaUAghqPxM48llfOVaUaLbFVxmo5U3fyjNMaP-nHMUBwojutykMK-gC2R3J4bQgFWfKbGSL7M7UsextAvpq9iiOuR0LNE-xTfCgPIxHVdPZskO3yx0DkjM","q":"68OGRb0tLRjb_PpkGctcSjEz_vvcyjzxGL-fn4_h4GCw98Xrj6Y4rZ4lfWWRSeDohSvdd-ICSlxvxkQOIOcA0H7jyJcBC0KDs4hX5BRGJNDri3QX0ry4_F1ptAdbfiFgQGqCfMRCr7L60Tfd_6tLczvny7eEBKQNGdj6dLfhgMc","qi":"DFwixyxUDf0REPLLa8hOKieRL95_AH9rbYWzStBOdSjKWra5l0reD6a4bbvAYvl0e8qCcRI6S8Nzpz0BYm4sJL7poVOnjxqvBY3Q9Ppf4Mq8lW39pOCJcqOHIvvYHsMjTC5uwp7Yg2p0GvxuUibbyNL1PXf6WZ_szVP_oSMrCXA"}

misc/docker-compose/bouncer/config.yml

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+admin:
+    http:
+        host: 127.0.0.1
+        port: 8081
+    cors:
+        allowedOrigins:
+            - http://localhost:3001
+        allowCredentials: true
+        allowMethods:
+            - POST
+            - GET
+            - PUT
+            - DELETE
+        allowedHeaders:
+            - Origin
+            - Accept
+            - Content-Type
+            - Authorization
+            - Sentry-Trace
+        debug: false
+    auth:
+        issuer: http://127.0.0.1:8081
+        privateKey: /etc/bouncer/admin-key.json
+    metrics:
+        enabled: true
+        endpoint: /.bouncer/metrics
+        basicAuth: null
+proxy:
+    http:
+        host: 0.0.0.0
+        port: 8080
+    metrics:
+        enabled: true
+        endpoint: /.bouncer/metrics
+        basicAuth: null
+        
+redis:
+    addresses:
+        - redis:6379
+    master: ""
+logger:
+    level: 1
+    format: human
+layers:
+    queue:
+        templateDir: /usr/share/bouncer/layers/queue/templates
+        defaultKeepAlive: 1m0s

misc/docker-compose/docker-compose.yml

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+version: "2"
+services:
+  haproxy:
+    image: reg.cadoles.com/proxy_cache/library/haproxy:2.7-alpine
+    ports:
+      - 8080:8080
+    links:
+      - bouncer-proxy-1
+      - bouncer-proxy-2
+      - bouncer-proxy-3
+    volumes:
+      - ./haproxy/haproxy.cfg:/usr/local/etc/haproxy/haproxy.cfg
+
+  bouncer-admin:
+    image: reg.cadoles.com/cadoles/bouncer:latest
+    command: bouncer -c /etc/bouncer/config.yml server admin run
+    links:
+      - redis
+    volumes:
+      - ./bouncer/config.yml:/etc/bouncer/config.yml
+      - ./bouncer/admin-key.json:/etc/bouncer/admin-key.json
+
+  bouncer-proxy-1: &bouncer-proxy
+    image: reg.cadoles.com/cadoles/bouncer:latest
+    command: bouncer -c /etc/bouncer/config.yml server proxy run
+    links:
+      - redis
+    volumes:
+      - ./bouncer/config.yml:/etc/bouncer/config.yml
+      - ./bouncer/admin-key.json:/etc/bouncer/admin-key.json
+
+  bouncer-proxy-2: *bouncer-proxy
+  bouncer-proxy-3: *bouncer-proxy
+      
+  redis:
+    image: reg.cadoles.com/proxy_cache/library/redis:7-alpine
+    command: redis-server --save 60 1 --loglevel verbose
+    volumes:
+      - redis-data:/data
+
+volumes:
+  redis-data:

misc/docker-compose/haproxy/haproxy.cfg

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+global
+    maxconn 100
+    log stdout format raw local0 info
+
+defaults
+    mode    http
+    timeout client  30s
+    timeout server  30s
+    timeout connect 30s
+    log global
+    option httplog
+
+frontend proxy
+    bind    *:8080
+    default_backend bouncer-proxy
+
+backend bouncer-proxy
+    mode    http
+    server  bouncer-proxy-1 bouncer-proxy-1:8080 check
+    server  bouncer-proxy-2 bouncer-proxy-2:8080 check
+    server  bouncer-proxy-3 bouncer-proxy-3:8080 check