feat(docker): create Dockerfile to deploy to fly.io

.dockerignore

@@ -0,0 +1,18 @@
+# Generated by Cargo
+# will have compiled files and executables
+**/debug
+**/target
+**/vendor
+
+# These are backup files generated by rustfmt
+**/**/*.rs.bk
+
+# MSVC Windows builds of rustc generate these, which store debugging information
+**/*.pdb
+
+# IDE
+**/.idea
+**/.vscode
+
+# Configs
+fly.toml

.gitignore

@@ -2,6 +2,7 @@
 # will have compiled files and executables
 debug/
 target/
+vendor/
 
 # These are backup files generated by rustfmt
 **/*.rs.bk
@@ -13,8 +14,5 @@ target/
 .idea/
 .vscode/
 
-# Configs
-config.toml
-
 # Data
-*.db
+*.db

Dockerfile

@@ -0,0 +1,38 @@
+FROM rust:latest as builder
+
+# Make a fake Rust app to keep a cached layer of compiled crates
+RUN USER=root cargo new app
+WORKDIR /usr/src/app
+COPY Cargo.toml Cargo.lock ./
+
+# Needs at least a main.rs file with a main function
+RUN mkdir src && echo "fn main(){}" > src/main.rs
+
+# Will build all dependent crates in release mode
+RUN --mount=type=cache,target=/usr/local/cargo/registry \
+  --mount=type=cache,target=/usr/src/app/target \
+  cargo build --release
+
+# Copy the rest
+COPY . .
+
+# Build (install) the actual binaries
+RUN --mount=type=cache,target=/usr/local/cargo/registry \
+  --mount=type=cache,target=/usr/src/app/target \
+  cargo install --path .
+
+# Runtime image
+FROM debian:bullseye-slim
+
+# Run as "app" user
+RUN useradd -ms /bin/bash app
+
+USER app
+WORKDIR /app
+
+# Get compiled binaries from builder's cargo install directory
+COPY --from=builder /usr/local/cargo/bin/HamVerBot /app/HamVerBot
+
+# Copy the config and DB files (workaround!)
+COPY config.toml /app/config.toml
+COPY db/HamVerBot.db /app/db/HamVerBot.db

fly.toml

@@ -0,0 +1,18 @@
+# fly.toml file generated for hamverbot on 2023-02-27T17:38:35+05:30
+
+app = "hamverbot"
+kill_signal = "SIGINT"
+kill_timeout = 5
+processes = []
+
+[env]
+
+[experimental]
+auto_rollback = true
+cmd = "./HamVerBot"
+
+[[mounts]]
+source = "hamverbot_data"
+destination = "/app/db"
+
+[[services]]