feat(federation): add scenario-mastodon setup and teardown (#1274)

2/5 taken out of #1269

This patch adds the setup and teardown of Mastodon for use in the end-to-end tests

Co-Authored-By: zam <mirco.zachmann@meissa.de>
Co-Authored-By: erik <erik.seiert@meissa-gmbh.de>
Co-Authored-By: Michael Jerger <michael.jerger@meissa-gmbh.de>

Reviewed-on: https://code.forgejo.org/forgejo/end-to-end/pulls/1274
Reviewed-by: earl-warren <earl-warren@noreply.code.forgejo.org>
Reviewed-by: Beowulf <beowulf@noreply.code.forgejo.org>
Co-authored-by: famfo <famfo@famfo.xyz>
Co-committed-by: famfo <famfo@famfo.xyz>

federation/scenario-mastodon/compose.yaml

@@ -0,0 +1,95 @@
+networks:
+    external_network:
+    internal_network:
+        internal: true
+
+services:
+    forgejo:
+        image: code.forgejo.org/oci/alpine:latest
+        volumes:
+            - ./forgejo/certs/:/usr/local/share/ca-certificates/
+            - ./forgejo/init/:/init/
+            - ./forgejo/etc/lighttpd.conf:/etc/lighttpd.conf
+        restart: unless-stopped
+        entrypoint: "sh /init/init.sh"
+        networks:
+            - external_network
+            - internal_network
+
+    forgejo-app:
+        profiles:
+            - forgejo_container
+        # built from https://code.forgejo.org/federation/build-mastodon/src/branch/main/debian-containerfile
+        image: code.forgejo.org/federation/debian:trixie-cacerts
+        tmpfs:
+            - /data
+        volumes:
+            - ./forgejo-app/init/:/init/
+            - ./forgejo-app/config/:/config/
+            - ./resources/certs/:/usr/local/share/ca-certificates/
+            - "${FORGEJO_PATH}:/usr/local/bin/forgejo"
+        ports:
+            - 3003:3003
+        entrypoint: "sh /init/init.sh"
+        networks:
+            - external_network
+            - internal_network
+
+    postgres:
+        image: code.forgejo.org/oci/postgres:14
+        tmpfs:
+            - /var/lib/postgresql/data
+        environment:
+            POSTGRES_USER: postgres
+            POSTGRES_DB: postgres
+            POSTGRES_PASSWORD: postgres
+            POSTGRES_HOST_AUTH_METHOD: trust
+        networks:
+            - internal_network
+
+    redis:
+        image: code.forgejo.org/oci/redis:7.2
+        tmpfs:
+            - /var/lib/redis/
+        networks:
+            - internal_network
+
+    mastodon-app:
+        # built from https://code.forgejo.org/federation/build-mastodon/src/branch/main/mastodon-containerfile
+        image: code.forgejo.org/federation/mastodon:v4.5-test
+        volumes:
+            - ./resources/certs:/usr/local/share/ca-certificates/
+            - ./mastodon-app/init/:/init/
+        environment: &mastodon_env
+            DB_HOST: postgres
+            DB_USER: postgres
+            DB_PASS: postgres
+            REDIS_HOST: redis
+            PORT: 4000
+            LOCAL_DOMAIN: ${MASTODON_HOST}:4000
+            ALTERNATE_DOMAINS: ${MASTODON_HOST},localhost
+            EMAIL_DOMAIN_ALLOWLIST: localhost
+            AUTHORIZED_FETCH: "true"
+            ALLOWED_PRIVATE_ADDRESSES: 0.0.0.0/0,::/0
+            SECRET_KEY_BASE: bc1bdb4d3d57a2c292a8f145d5d3c921
+            ACTIVE_RECORD_ENCRYPTION_DETERMINISTIC_KEY: fkSxKD2bF396kdQbrP1EJ7WbU7ZgNokR
+            ACTIVE_RECORD_ENCRYPTION_KEY_DERIVATION_SALT: r0hvVmzBVsjxC7AMlwhOzmtc36ZCOS1E
+            ACTIVE_RECORD_ENCRYPTION_PRIMARY_KEY: PhdFyyfy5xJ7WVd2lWBpcPScRQHzRTNr
+        ports:
+            - "4000:4000"
+        entrypoint: "sh /init/init.sh"
+        networks:
+            - external_network
+            - internal_network
+
+    mastodon-sidekiq:
+        # built from https://code.forgejo.org/federation/build-mastodon/src/branch/main/mastodon-containerfile
+        image: code.forgejo.org/federation/mastodon:v4.5-test
+        volumes:
+            - ./resources/certs:/usr/local/share/ca-certificates/
+            - ./mastodon-sidekiq/init/:/init/
+        restart: unless-stopped
+        environment: *mastodon_env
+        entrypoint: "sh /init/init.sh"
+        networks:
+            - internal_network