Add docker files

.dockerignore

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+.gitignore
+Dockerfile
+README.md
+.github
+ddrs
+coverage.lcov
+coverage.out
+.git
+
+### dotenv ###
+.env
+
+### Rust ###
+# Generated by Cargo
+# will have compiled files and executables
+debug/
+target/
+
+# Remove Cargo.lock from gitignore if creating an executable, leave it for libraries
+# More information here https://doc.rust-lang.org/cargo/guide/cargo-toml-vs-cargo-lock.html
+Cargo.lock
+
+# These are backup files generated by rustfmt
+**/*.rs.bk
+
+# MSVC Windows builds of rustc generate these, which store debugging information
+*.pdb
+
+### macOS ###
+# General
+.DS_Store
+.AppleDouble
+.LSOverride
+
+# Icon must end with two \r
+Icon
+
+
+# Thumbnails
+._*
+
+# Files that might appear in the root of a volume
+.DocumentRevisions-V100
+.fseventsd
+.Spotlight-V100
+.TemporaryItems
+.Trashes
+.VolumeIcon.icns
+.com.apple.timemachine.donotpresent
+
+# Directories potentially created on remote AFP share
+.AppleDB
+.AppleDesktop
+Network Trash Folder
+Temporary Items
+.apdisk
+
+### Windows ###
+# Windows thumbnail cache files
+Thumbs.db
+Thumbs.db:encryptable
+ehthumbs.db
+ehthumbs_vista.db
+
+# Dump file
+*.stackdump
+
+# Folder config file
+[Dd]esktop.ini
+
+# Recycle Bin used on file shares
+$RECYCLE.BIN/
+
+# Windows Installer files
+*.cab
+*.msi
+*.msix
+*.msm
+*.msp
+
+# Windows shortcuts
+*.lnk
+
+### Linux ###
+*~
+
+# temporary files which can be created if a process still has a handle open of a deleted file
+.fuse_hidden*
+
+# KDE directory preferences
+.directory
+
+# Linux trash folder which might appear on any partition or disk
+.Trash-*
+
+# .nfs files are created when an open file is removed but is still being accessed
+.nfs*
+
+
+# Added by cargo
+
+/target

Dockerfile

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+FROM rust:1.81.0-alpine AS base
+RUN apk add musl-dev musl-utils
+RUN cargo install cargo-chef
+
+FROM base AS chef
+COPY . .
+RUN cargo chef prepare --recipe-path recipe.json
+
+FROM chef AS builder
+COPY --from=chef /recipe.json recipe.json
+RUN cargo chef cook --release --recipe-path recipe.json
+COPY . .
+RUN cargo build --target x86_64-unknown-linux-musl --release --bin ddrs
+
+FROM scratch AS runtime
+COPY --from=builder /target/x86_64-unknown-linux-musl/release/ddrs /bin/
+COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
+CMD ["/bin/ddrs"]

docker-compose.yml

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+services:
+  cloudflare-ddrs:
+    image: ddrs:latest
+    container_name: ddrs
+    network_mode: "host"
+    restart: always
+    volumes:
+      - ./config.toml:/etc/ddrs/config.toml