Adding docker and docker-compose.

.dockerignore

@@ -0,0 +1,3 @@
+target
+.git
+docker/volumes

.gitignore

@@ -1,2 +1,3 @@
 /target
 /data
+/docker/volumes

docker/Dockerfile

@@ -0,0 +1,30 @@
+# Build 
+FROM ekidd/rust-musl-builder:1.42.0-openssl11 as rust
+
+# Cache deps
+WORKDIR /app
+RUN sudo chown -R rust:rust .
+RUN USER=root cargo new server
+WORKDIR /app/server
+COPY Cargo.toml Cargo.lock ./
+RUN sudo chown -R rust:rust .
+RUN mkdir -p ./src/bin \
+  && echo 'fn main() { println!("Dummy") }' > ./src/bin/main.rs 
+RUN cargo build --release
+RUN rm -f ./target/x86_64-unknown-linux-musl/release/deps/pict_rs*
+COPY src ./src/
+
+# Build for release
+RUN cargo build --frozen --release
+
+FROM alpine:3.10
+
+# Copy resources
+COPY --from=rust /app/server/target/x86_64-unknown-linux-musl/release/pict-rs /app/pict-rs
+
+RUN addgroup -g 1000 pictrs
+RUN adduser -D -s /bin/sh -u 1000 -G pictrs pictrs
+RUN chown pictrs:pictrs /app/pict-rs
+USER pictrs
+EXPOSE 8080
+CMD ["/app/pict-rs"]

docker/docker-compose.yml

@@ -0,0 +1,15 @@
+version: '3.3'
+
+services:
+  pictrs:
+    build: 
+      context: ../
+      dockerfile: docker/Dockerfile
+    user: root
+    ports:
+      - "127.0.0.1:8080:8080"
+    restart: always
+    environment:
+      - PICTRS_PATH=/app/data
+    volumes:
+      - ./volumes/pictrs:/app/data

src/config.rs

@@ -5,16 +5,23 @@ pub(crate) struct Config {
     #[structopt(
         short,
         long,
-        help = "The address and port the server binds to, e.g. 127.0.0.1:80"
+        env = "PICTRS_ADDR",
+        default_value = "0.0.0.0:8080",
+        help = "The address and port the server binds to. Default: 0.0.0.0:8080"
     )]
     addr: SocketAddr,
 
-    #[structopt(short, long, help = "The path to the data directory, e.g. data/")]
+    #[structopt(
+      short, 
+      long, 
+      env = "PICTRS_PATH",
+      help = "The path to the data directory, e.g. data/")]
     path: PathBuf,
 
     #[structopt(
         short,
         long,
+        env = "PICTRS_FORMAT",
         help = "An image format to convert all uploaded files into, supports 'jpg' and 'png'"
     )]
     format: Option<Format>,