feat: postgres dockerfile

db/Dockerfile

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+FROM postgres:14
+
+COPY db.sql /docker-entrypoint-initdb.d/

db/db.sql

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+CREATE TABLE IF NOT EXISTS users (
+	id SERIAL PRIMARY KEY,
+	username VARCHAR(255) UNIQUE NOT NULL,
+	password VARCHAR(255) NOT NULL,
+	slug VARCHAR(255) UNIQUE NOT NULL,
+	external_tokens JSONB[] NOT NULL
+);
+
+CREATE TABLE IF NOT EXISTS pipelines (
+	id SERIAL PRIMARY KEY,
+	name VARCHAR(255) NOT NULL,
+	type VARCHAR(255) NOT NULL,
+	params JSONB NOT NULL,
+	user_id INTEGER NOT NULL,
+	enabled BOOLEAN NOT NULL,
+	error TEXT,
+	trigger_count INTEGER NOT NULL,
+	last_trigger TIMESTAMP,
+	CONSTRAINT fk_user
+		FOREIGN KEY (user_id)
+			REFERENCES users(id)
+				ON DELETE CASCADE
+);
+
+CREATE TABLE IF NOT EXISTS reactions (
+	id SERIAL PRIMARY KEY,
+	type VARCHAR(255) NOT NULL,
+	params JSONB NOT NULL,
+	pipeline_id INTEGER NOT NULL,
+	react_order INTEGER NOT NULL,
+	CONSTRAINT fk_pipeline
+		FOREIGN KEY (pipeline_id)
+			REFERENCES pipelines(id)
+				ON DELETE CASCADE
+);