Docker Compose bot + Google Api

LaDOSE.Src/LaDOSE.DiscordBot/Dockerfile

@@ -0,0 +1,52 @@
+# Builds the LaDOSE.DiscordBot image. Context is LaDOSE.Src, same as LaDOSE.Src/Dockerfile,
+# so the two share LaDOSE.Src/.dockerignore — hence the LaDOSE.DiscordBot/ prefix on every
+# COPY below. docker-compose.yml passes `dockerfile: LaDOSE.DiscordBot/Dockerfile`.
+#
+# The context has to be the whole of LaDOSE.Src, not this directory: the bot pulls in
+# LaDOSE.REST -> LaDOSE.DTO by ProjectReference, and Libraries/ChallongeCSharpDriver.dll
+# by HintPath.
+ARG DOTNET_VERSION=9.0
+
+FROM mcr.microsoft.com/dotnet/sdk:${DOTNET_VERSION} AS build
+WORKDIR /src
+
+# Release here, unlike the API image. Nothing in this project is gated on Debug — the
+# #if DEBUG / Condition="'$(Configuration)' == 'Debug'" pairs that force the API to build
+# Debug (OpenAPI, Scalar) have no equivalent in LaDOSE.DiscordBot.csproj.
+ARG BUILD_CONFIGURATION=Release
+
+# Project files first so this layer survives every .cs edit. Restore under the same
+# Configuration as the publish below, matching LaDOSE.Src/Dockerfile.
+COPY global.json ./
+COPY LaDOSE.DiscordBot/LaDOSE.DiscordBot.csproj LaDOSE.DiscordBot/
+COPY LaDOSE.REST/LaDOSE.REST.csproj LaDOSE.REST/
+COPY LaDOSE.DTO/LaDOSE.DTO.csproj LaDOSE.DTO/
+RUN dotnet restore LaDOSE.DiscordBot/LaDOSE.DiscordBot.csproj -p:Configuration=${BUILD_CONFIGURATION}
+
+COPY . .
+RUN dotnet publish LaDOSE.DiscordBot/LaDOSE.DiscordBot.csproj -c ${BUILD_CONFIGURATION} --no-restore -o /app/out
+
+# The file on disk is Quotes.txt; Command/Public.cs:114 opens "quotes.txt". Windows does
+# not care, Linux does — without this the !Quote command throws FileNotFoundException
+# (LoadQuote, unlike LoadCards, does not catch it). A copy rather than a rename, so the
+# name the .csproj lists keeps working too.
+RUN if [ -f /app/out/Quotes.txt ] && [ ! -f /app/out/quotes.txt ]; then \
+        cp /app/out/Quotes.txt /app/out/quotes.txt; \
+    fi
+
+# runtime, not aspnet: this is a console app with no Kestrel and no listening port.
+FROM mcr.microsoft.com/dotnet/runtime:${DOTNET_VERSION}
+WORKDIR /app
+
+COPY --from=build /app/out/ ./
+COPY LaDOSE.DiscordBot/docker-entrypoint.sh /usr/local/bin/docker-entrypoint.sh
+RUN chmod +x /usr/local/bin/docker-entrypoint.sh
+
+# WORKDIR is load-bearing, not cosmetic: Program.cs points its ConfigurationBuilder at
+# Directory.GetCurrentDirectory() for settings.json, and Public.cs reads questions.txt /
+# answers.txt / quotes.txt by bare relative path. All four sit in /app.
+#
+# The entrypoint renders settings.json from the environment before handing over; see the
+# script for why that indirection exists.
+ENTRYPOINT ["/usr/local/bin/docker-entrypoint.sh"]
+CMD ["dotnet", "LaDOSE.DiscordBot.dll"]

LaDOSE.Src/LaDOSE.DiscordBot/LaDOSE.DiscordBot.csproj

@@ -13,7 +13,7 @@
     <PackageReference Include="Microsoft.Extensions.Configuration" Version="8.0.0" />
     <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="8.0.1" />
     <PackageReference Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="8.0.2" />
-    <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.4" />
   </ItemGroup>
 
   <ItemGroup>

LaDOSE.Src/LaDOSE.DiscordBot/docker-entrypoint.sh

@@ -0,0 +1,49 @@
+#!/bin/sh
+# LaDOSE.DiscordBot reads its configuration from ./settings.json and from nothing else:
+# Program.cs builds a ConfigurationBuilder with AddJsonFile("settings.json") and no
+# AddEnvironmentVariables(), so a LADOSE_* variable would be invisible to it. This script
+# renders that file at container start instead — the same indirection LaDOSE.WebApp's
+# entrypoint uses to turn LADOSE_API_BASE_URL into /config.js. One image, any token.
+#
+# It writes only when LADOSE_DISCORD_TOKEN is set. Left unset, whatever settings.json is
+# already at /app wins: the placeholder baked in by the build, or a file bind-mounted over
+# it. Doing both — mounting settings.json read-only *and* setting the variable — fails
+# here with EROFS rather than silently ignoring one of them.
+set -eu
+
+settings_file=/app/settings.json
+
+# Drop control characters (newlines included) so a value cannot break out of its string
+# literal, then escape backslashes before double quotes. A token containing " or \ stays
+# inert data.
+json_string() {
+    printf '%s' "${1:-}" | tr -d '\001-\037' | sed -e 's/\\/\\\\/g' -e 's/"/\\"/g'
+}
+
+if [ -n "${LADOSE_DISCORD_TOKEN:-}" ]; then
+    rest_url=${LADOSE_BOT_REST_URL:-http://api:5000}
+
+    # All five keys, always. Program.cs calls .ToString() on each of them at startup, so a
+    # missing one is a NullReferenceException before the bot ever reaches Discord.
+    cat >"$settings_file" <<EOF
+{
+  "Discord": {
+    "Token": "$(json_string "${LADOSE_DISCORD_TOKEN}")"
+  },
+  "Challonge": {
+    "Token": "$(json_string "${LADOSE_CHALLONGE_API_KEY:-}")"
+  },
+  "REST": {
+    "Url": "$(json_string "${rest_url}")",
+    "User": "$(json_string "${LADOSE_BOT_REST_USER:-}")",
+    "Password": "$(json_string "${LADOSE_BOT_REST_PASSWORD:-}")"
+  }
+}
+EOF
+    # The token is deliberately not echoed.
+    echo "settings.json: rendered from the environment (REST:Url=$rest_url)" >&2
+else
+    echo "settings.json: LADOSE_DISCORD_TOKEN unset, using the file already at $settings_file" >&2
+fi
+
+exec "$@"