added ci/cd

Dockerfile

@@ -0,0 +1,31 @@
+# syntax=docker/dockerfile:1
+
+# ---- Build stage: compile and assemble a runnable distribution ----
+FROM eclipse-temurin:25-jdk AS build
+WORKDIR /app
+
+# Copy the Gradle wrapper and build scripts first so dependency resolution is
+# cached in its own layer and only re-runs when the build files change.
+COPY gradlew settings.gradle.kts build.gradle.kts ./
+COPY gradle ./gradle
+RUN chmod +x gradlew && ./gradlew --no-daemon dependencies > /dev/null 2>&1 || true
+
+# Now the source. `installDist` produces build/install/Botinator with a launcher
+# script and all dependency jars under lib/.
+COPY src ./src
+RUN ./gradlew --no-daemon --stacktrace installDist
+
+# ---- Runtime stage: JRE only, no build tooling ----
+FROM eclipse-temurin:25-jre
+WORKDIR /app
+
+# Run as an unprivileged user.
+RUN useradd --system --create-home --uid 10001 botinator
+USER botinator
+
+# The assembled app (bin/Botinator launcher + lib/*.jar).
+COPY --from=build --chown=botinator:botinator /app/build/install/Botinator/ ./
+
+# BOT_TOKEN etc. and the catchphrases file are supplied at deploy time
+# (env_file / -e for config, a mounted volume for catchphrases.txt).
+ENTRYPOINT ["./bin/Botinator"]