Nicer Dockerfile

Dockerfile

@@ -1,33 +1,37 @@
-FROM mcr.microsoft.com/dotnet/sdk:8.0-bookworm-slim-amd64 as build-env
+# Build stage
+FROM mcr.microsoft.com/dotnet/sdk:8.0-bookworm-slim-amd64 AS build-env
 ARG TARGETPLATFORM
 ARG BUILDPLATFORM
 
-RUN apt-get update \
-  && apt-get install -y ca-certificates curl gnupg \
-  && mkdir -p /etc/apt/keyrings \
-  && curl -fsSL https://deb.nodesource.com/gpgkey/nodesource-repo.gpg.key | gpg --dearmor -o /etc/apt/keyrings/nodesource.gpg \
-  && echo "deb [signed-by=/etc/apt/keyrings/nodesource.gpg] https://deb.nodesource.com/node_20.x nodistro main" | tee /etc/apt/sources.list.d/nodesource.list \
-  && apt-get update \
-  && apt-get install nodejs -y;
+# Install Node.js
+RUN apt-get update && apt-get install -y ca-certificates curl gnupg && \
+    mkdir -p /etc/apt/keyrings && \
+    curl -fsSL https://deb.nodesource.com/gpgkey/nodesource-repo.gpg.key | gpg --dearmor -o /etc/apt/keyrings/nodesource.gpg && \
+    echo "deb [signed-by=/etc/apt/keyrings/nodesource.gpg] https://deb.nodesource.com/node_20.x nodistro main" | tee /etc/apt/sources.list.d/nodesource.list && \
+    apt-get update && \
+    apt-get install -y nodejs && \
+    apt-get clean && \
+    rm -rf /var/lib/apt/lists/*
 
 WORKDIR /App
-
 COPY . ./
-RUN dotnet restore
 
-RUN echo "I am running on ${BUILDPLATFORM}"
-RUN echo "building for ${TARGETPLATFORM}"
-RUN export TARGETPLATFORM="${TARGETPLATFORM}"
+RUN echo "Building on ${BUILDPLATFORM} for ${TARGETPLATFORM}"
 
+RUN dotnet restore
 RUN dotnet publish -c Release -o out
 
-FROM mcr.microsoft.com/dotnet/aspnet:8.0
+# Runtime stage
+FROM mcr.microsoft.com/dotnet/aspnet:8.0 AS runtime
 WORKDIR /App
 EXPOSE 8267 8268
-ENV ASPNETCORE_URLS "http://+:8267"
-ENV OTA_UPDATE_PORT 8268
-ENV CONFIG_DIR "/config/espresense"
+
+ENV ASPNETCORE_URLS="http://+:8267" \
+    OTA_UPDATE_PORT=8268 \
+    CONFIG_DIR="/config/espresense"
+
 COPY --from=build-env /App/out .
+
 LABEL \
   io.hass.version="VERSION" \
   io.hass.type="addon" \