Dockerfile.dev

# Jump to 'latest' to ensure we have the most recent Cargo features
FROM rust:latest

# Use a faster way to get cargo-watch without compiling from source
# This saves about 10 minutes of build time!
RUN curl -L https://github.com/watchexec/cargo-watch/releases/download/v8.5.3/cargo-watch-v8.5.3-x86_64-unknown-linux-gnu.tar.xz | tar -xJ --strip-components=1 -C /usr/local/bin

WORKDIR /app

# Copy dependency files
COPY Cargo.toml Cargo.lock* ./

# Pre-build dependencies (using a dummy file to cache the layer)
RUN mkdir src && echo "fn main() {}" > src/main.rs && cargo build

# Copy the rest of the source
COPY . .

EXPOSE 8000

# Use the binary we just installed
CMD ["cargo-watch", "-x", "run"]