Dockerize Rust Apps
2023-04-03
Given a simple rust app:
use actix_web::{get, App, HttpResponse, HttpServer, Responder};
#[get("/")]
async fn hello() -> impl Responder {
HttpResponse::Ok().body("Hello world!")
}
#[actix_web::main]
async fn main() -> std::io::Result<()> {
HttpServer::new(|| {
App::new()
.service(hello)
})
.bind(("0.0.0.0", 8080))?
.run()
.await
}
A simple way to build a container:
FROM rust as buildenv
WORKDIR /my-rust-app/
COPY ./ /my-rust-app/
RUN cargo build --release
FROM debian
COPY --from=buildenv /my-rust-app/target/release/my-rust-app /bin/my-rust-app
EXPOSE 8080
CMD ["my-rust-app"]
running time podman build . -t myapp
output:
[1/2] STEP 1/4: FROM rust AS buildenv
[1/2] STEP 2/4: WORKDIR /my-rust-app/
--> Pushing cache []:8c83adb38edbcc03512f6328725a91e79f21a141a787fb52e35921b2769fcd05
--> 3fd77c028c7
[1/2] STEP 3/4: COPY ./ /my-rust-app/
--> Pushing cache []:80e418199b8b50c73dd439f0435b7e46c54209032e3ad31e4b4f4a9a77a126fd
--> 74ef634f7a2
[1/2] STEP 4/4: RUN cargo build --release
Updating crates.io index
Downloading crates ...
Downloaded time-core v0.1.0
Downloaded tinyvec_macros v0.1.0
Downloaded adler v1.0.2
Downloaded smallvec v1.10.0
Downloaded alloc-no-stdlib v2.0.4
Downloaded actix-macros v0.2.3
Downloaded cfg-if v1.0.0
Downloaded unicode-ident v1.0.6
Downloaded futures-sink v0.3.25
Downloaded futures-core v0.3.25
Downloaded form_urlencoded v1.1.0
Downloaded version_check v0.9.4
Downloaded unicode-bidi v0.3.10
Downloaded url v2.3.1
Downloaded unicode-normalization v0.1.22
Downloaded httpdate v1.0.2
Downloaded cpufeatures v0.2.5
Downloaded local-waker v0.1.3
Downloaded actix-utils v3.0.1
Downloaded percent-encoding v2.2.0
Downloaded pin-utils v0.1.0
Downloaded time-macros v0.2.6
Downloaded zstd-safe v5.0.2+zstd.1.5.2
Downloaded signal-hook-registry v1.4.0
Downloaded futures-task v0.3.25
Downloaded crypto-common v0.1.6
Downloaded bytestring v1.2.0
Downloaded bitflags v1.3.2
Downloaded block-buffer v0.10.3
Downloaded autocfg v1.1.0
Downloaded mime v0.3.16
Downloaded local-channel v0.1.3
Downloaded actix-web-codegen v4.1.0
Downloaded rustc_version v0.4.0
Downloaded serde_urlencoded v0.7.1
Downloaded convert_case v0.4.0
Downloaded generic-array v0.14.6
Downloaded getrandom v0.2.8
Downloaded actix-codec v0.5.0
Downloaded fnv v1.0.7
Downloaded itoa v1.0.5
Downloaded actix-service v2.0.2
Downloaded actix-rt v2.7.0
Downloaded jobserver v0.1.25
Downloaded pin-project-lite v0.2.9
Downloaded paste v1.0.11
Downloaded ppv-lite86 v0.2.17
Downloaded zstd v0.11.2+zstd.1.5.2
Downloaded alloc-stdlib v0.2.2
Downloaded pkg-config v0.3.26
Downloaded actix-router v0.5.1
Downloaded num_cpus v1.15.0
Downloaded ahash v0.7.6
Downloaded socket2 v0.4.7
Downloaded parking_lot_core v0.9.6
Downloaded scopeguard v1.1.0
Downloaded rand_core v0.6.4
Downloaded rand_chacha v0.3.1
Downloaded crc32fast v1.3.2
Downloaded sha1 v0.10.5
Downloaded once_cell v1.17.0
Downloaded digest v0.10.6
Downloaded httparse v1.8.0
Downloaded cookie v0.16.2
Downloaded lock_api v0.4.9
Downloaded tinyvec v1.6.0
Downloaded quote v1.0.23
Downloaded actix-server v2.1.1
Downloaded parking_lot v0.12.1
Downloaded ryu v1.0.12
Downloaded cc v1.0.78
Downloaded bytes v1.3.0
Downloaded semver v1.0.16
Downloaded derive_more v0.99.17
Downloaded language-tags v0.3.2
Downloaded miniz_oxide v0.6.2
Downloaded tracing-core v0.1.30
Downloaded proc-macro2 v1.0.50
Downloaded log v0.4.17
Downloaded base64 v0.13.1
Downloaded flate2 v1.0.25
Downloaded memchr v2.5.0
Downloaded slab v0.4.7
Downloaded indexmap v1.9.2
Downloaded tracing v0.1.37
Downloaded serde v1.0.152
Downloaded tokio-util v0.7.4
Downloaded time v0.3.17
Downloaded rand v0.8.5
Downloaded http v0.2.8
Downloaded mio v0.8.5
Downloaded aho-corasick v0.7.20
Downloaded hashbrown v0.12.3
Downloaded typenum v1.16.0
Downloaded futures-util v0.3.25
Downloaded serde_json v1.0.91
Downloaded h2 v0.3.15
Downloaded syn v1.0.107
Downloaded actix-http v3.2.2
Downloaded brotli-decompressor v2.3.4
Downloaded actix-web v4.2.1
Downloaded regex v1.7.1
Downloaded idna v0.3.0
Downloaded regex-syntax v0.6.28
Downloaded tokio v1.24.2
Downloaded libc v0.2.139
Downloaded zstd-sys v2.0.5+zstd.1.5.2
Downloaded encoding_rs v0.8.31
Downloaded brotli v3.3.4
Compiling libc v0.2.139
Compiling cfg-if v1.0.0
Compiling autocfg v1.1.0
Compiling memchr v2.5.0
Compiling log v0.4.17
Compiling version_check v0.9.4
Compiling pin-project-lite v0.2.9
Compiling futures-core v0.3.25
Compiling lock_api v0.4.9
Compiling bytes v1.3.0
Compiling parking_lot_core v0.9.6
Compiling smallvec v1.10.0
Compiling once_cell v1.17.0
Compiling scopeguard v1.1.0
Compiling serde v1.0.152
Compiling jobserver v0.1.25
Compiling tokio v1.24.2
Compiling proc-macro2 v1.0.50
Compiling typenum v1.16.0
Compiling itoa v1.0.5
Compiling cc v1.0.78
Compiling parking_lot v0.12.1
Compiling tracing-core v0.1.30
Compiling mio v0.8.5
Compiling generic-array v0.14.6
Compiling signal-hook-registry v1.4.0
Compiling socket2 v0.4.7
Compiling pkg-config v0.3.26
Compiling futures-task v0.3.25
Compiling unicode-ident v1.0.6
Compiling quote v1.0.23
Compiling zstd-sys v2.0.5+zstd.1.5.2
Compiling tracing v0.1.37
Compiling syn v1.0.107
Compiling futures-util v0.3.25
Compiling getrandom v0.2.8
Compiling paste v1.0.11
Compiling futures-sink v0.3.25
Compiling percent-encoding v2.2.0
Compiling pin-utils v0.1.0
Compiling indexmap v1.9.2
Compiling slab v0.4.7
Compiling fnv v1.0.7
Compiling zstd-safe v5.0.2+zstd.1.5.2
Compiling alloc-no-stdlib v2.0.4
Compiling local-waker v0.1.3
Compiling tinyvec_macros v0.1.0
Compiling crc32fast v1.3.2
Compiling tinyvec v1.6.0
Compiling alloc-stdlib v0.2.2
Compiling http v0.2.8
Compiling aho-corasick v0.7.20
Compiling tokio-util v0.7.4
Compiling rand_core v0.6.4
Compiling crypto-common v0.1.6
Compiling block-buffer v0.10.3
Compiling ahash v0.7.6
Compiling regex-syntax v0.6.28
Compiling httparse v1.8.0
Compiling adler v1.0.2
Compiling encoding_rs v0.8.31
Compiling time-core v0.1.0
Compiling ppv-lite86 v0.2.17
Compiling hashbrown v0.12.3
Compiling rand_chacha v0.3.1
Compiling time-macros v0.2.6
Compiling miniz_oxide v0.6.2
Compiling regex v1.7.1
Compiling digest v0.10.6
Compiling actix-service v2.0.2
Compiling brotli-decompressor v2.3.4
Compiling unicode-normalization v0.1.22
Compiling actix-utils v3.0.1
Compiling bytestring v1.2.0
Compiling form_urlencoded v1.1.0
Compiling actix-rt v2.7.0
Compiling cookie v0.16.2
Compiling ryu v1.0.12
Compiling bitflags v1.3.2
Compiling cpufeatures v0.2.5
Compiling convert_case v0.4.0
Compiling serde_json v1.0.91
Compiling unicode-bidi v0.3.10
Compiling time v0.3.17
Compiling idna v0.3.0
Compiling derive_more v0.99.17
Compiling sha1 v0.10.5
Compiling actix-codec v0.5.0
Compiling actix-router v0.5.1
Compiling flate2 v1.0.25
Compiling brotli v3.3.4
Compiling h2 v0.3.15
Compiling rand v0.8.5
Compiling local-channel v0.1.3
Compiling num_cpus v1.15.0
Compiling language-tags v0.3.2
Compiling httpdate v1.0.2
Compiling base64 v0.13.1
Compiling mime v0.3.16
Compiling actix-server v2.1.1
Compiling actix-web-codegen v4.1.0
Compiling url v2.3.1
Compiling serde_urlencoded v0.7.1
Compiling actix-macros v0.2.3
Compiling zstd v0.11.2+zstd.1.5.2
Compiling actix-http v3.2.2
Compiling actix-web v4.2.1
Compiling my-rust-app v0.1.0 (/my-rust-app)
Finished release [optimized] target(s) in 10m 36s
--> Pushing cache []:6d2676c0531e99f67c87a9071f0f2e64cc813dd2d5c9deee67a672049cb26757
--> f708f5059fd
[2/2] STEP 1/4: FROM debian
[2/2] STEP 2/4: COPY --from=buildenv /my-rust-app/target/release/my-rust-app /bin/my-rust-app
--> Using cache 44fd16393a076ddd6e232402d5f9bfe6857cb3ee5f76b490420886757c5c4e62
--> Pushing cache []:1a0c79182d0ab95843cac387fba2d3c8fef98b0405280a708e2b75a83cc3a276
--> 44fd16393a0
[2/2] STEP 3/4: EXPOSE 8080
--> Using cache 215f72285e756bae63614f5f09b367cb56d2c7c9dae3d184d3f285b5ef7ff194
--> Pushing cache []:e25efcdf8981be13c6cfd524659f22e606062148f856485d428a43c872a15fa2
--> 215f72285e7
[2/2] STEP 4/4: CMD ["my-rust-app"]
--> Using cache de6d066b8bc55766d2bef1853639c0a1251b9108a73b044a0bb3473b811ebed9
[2/2] COMMIT myapp
--> Pushing cache []:66f7b265140851d2130d78c0a570f6aa8bf21692fc766015c66ef116f6fd54fb
--> de6d066b8bc
Successfully tagged localhost/myapp:latest
de6d066b8bc55766d2bef1853639c0a1251b9108a73b044a0bb3473b811ebed9
real 10m27.937s
user 0m0.132s
sys 0m0.143s
Running the app
podman run -p 8080:8080 myapp
🍺 manuel@argente ~/Ocio/my-rust-app $ curl localhost:8080
Hello world!🍺 manuel@argente ~/Ocio/my-rust-app $