Create Dockerfile

Dockerfile

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+ARG RUST_VERSION=1.94.1
+ARG APP_NAME=mnemosyne
+
+################################################################################
+# Create a stage for building the application.
+
+FROM rust:${RUST_VERSION}-alpine AS build
+ARG APP_NAME
+WORKDIR /app
+ENV IN_DOCKER=true
+
+# Install host build dependencies.
+RUN apk add --no-cache clang lld musl-dev git
+
+# Build the application.
+# Leverage a cache mount to /usr/local/cargo/registry/
+# for downloaded dependencies, a cache mount to /usr/local/cargo/git/db
+# for git repository dependencies, and a cache mount to /app/target/ for
+# compiled dependencies which will speed up subsequent builds.
+# Leverage a bind mount to the src directory to avoid having to copy the
+# source code into the container. Once built, copy the executable to an
+# output directory before the cache mounted /app/target is unmounted.
+RUN --mount=type=bind,source=src,target=src \
+    --mount=type=bind,source=web,target=web \
+    --mount=type=bind,source=Cargo.toml,target=Cargo.toml \
+    --mount=type=bind,source=Cargo.lock,target=Cargo.lock \
+    --mount=type=cache,target=/app/target/ \
+    --mount=type=cache,target=/usr/local/cargo/git/db \
+    --mount=type=cache,target=/usr/local/cargo/registry/ \
+    cargo build --locked --release && \
+    cp ./target/release/$APP_NAME /bin/server
+
+################################################################################
+# Create a new stage for running the application that contains the minimal
+# runtime dependencies for the application. This often uses a different base
+# image from the build stage where the necessary files are copied from the build
+# stage.
+#
+# The example below uses the alpine image as the foundation for running the app.
+# By specifying the "3.18" tag, it will use version 3.18 of alpine. If
+# reproducibility is important, consider using a digest
+# (e.g., alpine@sha256:664888ac9cfd28068e062c991ebcff4b4c7307dc8dd4df9e728bedde5c449d91).
+FROM alpine:3.23.3 AS final
+
+# Create a non-privileged user that the app will run under.
+# See https://docs.docker.com/go/dockerfile-user-best-practices/
+ARG UID=10001
+RUN adduser \
+    --disabled-password \
+    --gecos "" \
+    --home "/nonexistent" \
+    --shell "/sbin/nologin" \
+    --no-create-home \
+    --uid "${UID}" \
+    appuser
+
+RUN mkdir -p /app && chown appuser:appuser /app
+USER appuser
+WORKDIR /app
+ENV IN_DOCKER=true
+
+# Copy the executable from the "build" stage.
+COPY --from=build /bin/server /app/server
+
+# Expose the port that the application listens on.
+EXPOSE 39321
+
+# What the container should run when it is started.
+CMD ["/app/server"]