Docker setup optimizations/tweaks

.dockerignore

@@ -1,18 +1,11 @@
-/.git/
-/.github/
-/.idea/
-/docs/
-/logs/
-/scripts/
+# Start by excluding everything
+*
 
-bin/
-obj/
+# Include project code and build files
+!PluralKit.*/
+!PluralKit.sln
+!nuget.config
 
-*.conf
-*.md
-*.sql
-*.gz
-*.tar
-
-Dockerfile
-docker-compose.yml
+# Re-exclude host build artifact directories
+**/bin
+**/obj

Dockerfile

@@ -1,14 +1,19 @@
-FROM mcr.microsoft.com/dotnet/core/sdk:3.1-alpine AS build
-
-WORKDIR /app
-COPY . /app
-RUN dotnet publish -c Release -o out -f netcoreapp3.1
-
 FROM mcr.microsoft.com/dotnet/core/sdk:3.1-alpine
 WORKDIR /app
-RUN dotnet tool install --global dotnet-trace && dotnet tool install --global dotnet-dump && dotnet tool install --global dotnet-counters
-COPY --from=build /app/PluralKit.*/bin/Release/netcoreapp3.1 ./
 
+# Restore/fetch dependencies excluding app code to make use of caching
+COPY PluralKit.sln nuget.config /app/
+COPY PluralKit.API/PluralKit.API.csproj /app/PluralKit.API/
+COPY PluralKit.Bot/PluralKit.Bot.csproj /app/PluralKit.Bot/
+COPY PluralKit.Core/PluralKit.Core.csproj /app/PluralKit.Core/
+COPY PluralKit.Tests/PluralKit.Tests.csproj /app/PluralKit.Tests/
+RUN dotnet restore PluralKit.sln
+
+# Copy the rest of the code and build
+COPY . /app
+RUN dotnet build -c Release -o bin
+
+# Run :)
+# Allow overriding CMD from eg. docker-compose to run API layer too
 ENTRYPOINT ["dotnet"]
-CMD ["PluralKit.Bot.dll"]
-
+CMD ["bin/PluralKit.Bot.dll"]

docker-compose.yml

@@ -1,9 +1,13 @@
+# API port: 2838, InfluxDB port: 2839, both listen on localhost only
+# Reads `pluralkit.conf` from current directory, and logs to `/var/log/pluralkit`.
+
 version: "3"
+
 services:
   bot:
     image: pluralkit # This image is reused in the other containers due to the
     build: .         # build instruction right here
-    command: ["PluralKit.Bot.dll"]
+    command: ["bin/PluralKit.Bot.dll"]
     environment:
       - "PluralKit:Database=Host=db;Username=postgres;Password=postgres;Database=postgres;Maximum Pool Size=1000"
       - "PluralKit:InfluxUrl=http://influx:8086"
@@ -12,35 +16,39 @@ services:
     volumes:
       - "./pluralkit.conf:/app/pluralkit.conf:ro"
       - "/var/log/pluralkit:/var/log/pluralkit"
-    links:
-      - db
-      - influx
-    restart: always
+    restart: unless-stopped
+
   api:
     image: pluralkit
-    command: ["PluralKit.API.dll"]
+    command: ["bin/PluralKit.API.dll"]
     environment:
       - "PluralKit:Database=Host=db;Username=postgres;Password=postgres;Database=postgres;Maximum Pool Size=1000"
-    links:
-      - db
     ports:
       - "127.0.0.1:2838:5000"
-    restart: always
+    restart: unless-stopped
+
   db:
-    image: postgres:11-alpine
+    image: postgres:12-alpine
     volumes:
       - "db_data:/var/lib/postgresql/data"
-    restart: always
-    command: ["postgres", "-c", "max-connections=1000"]
+      - "/var/run/postgresql:/var/run/postgresql"
+    command: ["postgres",
+              "-c", "max-connections=1000",
+              "-c", "timezone='Etc/UTC'",
+              "-c", "max_wal_size=1GB",
+              "-c", "min_wal_size=80MB",
+              "-c", "shared_buffers=128MB"]
     environment:
       - "POSTGRES_PASSWORD=postgres"
+    restart: unless-stopped
+
   influx:
     image: influxdb:alpine
     volumes:
       - "influx_data:/var/lib/influxdb"
     ports:
-      - 2839:8086
-    restart: always
+      - 127.0.0.1:2839:8086
+    restart: unless-stopped
 
 volumes:
   db_data: