Added Dockerfile

Author: iComputerfreak

Dockerfile

@@ -0,0 +1,79 @@
+# ================================
+# Build image
+# ================================
+FROM swift:5.9-jammy as build
+
+# Install OS updates
+RUN export DEBIAN_FRONTEND=noninteractive DEBCONF_NONINTERACTIVE_SEEN=true \
+    && apt-get -q update \
+    && apt-get -q dist-upgrade -y\
+    && rm -rf /var/lib/apt/lists/*
+
+# Set up a build area
+WORKDIR /build
+
+# First just resolve dependencies.
+# This creates a cached layer that can be reused
+# as long as your Package.swift/Package.resolved
+# files do not change.
+COPY ./Package.* ./
+RUN swift package resolve --skip-update \
+        $([ -f ./Package.resolved ] && echo "--force-resolved-versions" || true)
+
+# Copy entire repo into container
+COPY . .
+
+# Go into the NotifierBot subdirectory for building
+WORKDIR /build/NotifierBot
+
+# Build everything, with optimizations
+RUN swift build -c release --static-swift-stdlib \
+    # Workaround for https://github.com/apple/swift/pull/68669
+    # This can be removed as soon as 5.9.1 is released, but is harmless if left in.
+    -Xlinker -u -Xlinker _swift_backtrace_isThunkFunction
+
+# Switch to the staging area
+WORKDIR /staging
+
+# Copy main executable to staging area
+RUN cp "$(swift build --package-path /build/NotifierBot -c release --show-bin-path)/App" ./
+
+# Copy resources bundled by SPM to staging area
+RUN find -L "$(swift build --package-path /build/NotifierBot -c release --show-bin-path)/" -regex '.*\.resources$' -exec cp -Ra {} ./ \;
+
+# ================================
+# Run image
+# ================================
+FROM swift:5.9-jammy-slim
+
+# Make sure all system packages are up to date, and install only essential packages.
+RUN export DEBIAN_FRONTEND=noninteractive DEBCONF_NONINTERACTIVE_SEEN=true \
+    && apt-get -q update \
+    && apt-get -q dist-upgrade -y \
+    && apt-get -q install -y \
+      ca-certificates \
+      tzdata \
+# If your app or its dependencies import FoundationNetworking, also install `libcurl4`.
+      libcurl4 \
+# If your app or its dependencies import FoundationXML, also install `libxml2`.
+      # libxml2 \
+    && rm -r /var/lib/apt/lists/*
+
+# Create a bot user and group with /app as its home directory
+RUN useradd --user-group --create-home --system --skel /dev/null --home-dir /app bot
+
+# Switch to the new home directory
+WORKDIR /app
+
+# Copy built executable and any staged resources from builder
+COPY --from=build --chown=bot:bot /staging /app
+
+# Provide configuration needed by the built-in crash reporter and some sensible default behaviors.
+ENV SWIFT_ROOT=/usr SWIFT_BACKTRACE=enable=yes,sanitize=yes,threads=all,images=all,interactive=no
+
+# Ensure all further commands run as the bot user
+USER bot:bot
+
+# Start the bot when the image is run
+ENTRYPOINT ["./App"]
+CMD []

NotifierBot/Sources/Notifier/main.swift

@@ -30,7 +30,7 @@ do {
     bot = try Bot(token: token)
     botUser = try bot.getMe().wait()
     guard let _ = botUser.username else {
-        print("Unable to retrieve bot username")
+        print("Error: Unable to retrieve bot username")
         exit(1)
     }