Issues building steel inside docker

[kskarthik]

Using rust:slim as base img

At the following Dockerfile steps:

RUN mkdir -p /lib/steel && \
export STEEL_HOME="/lib/steel"

RUN cargo build

RUN target/debug/steel cogs/install.scm

I get this below err:

error[E11]: Generic
   ┌─ cogs/install.scm:11:1
   │
11 │ 
   │   Error: Generic: environment variable not found

Error: SteelErr { repr: Repr { kind: Generic, message: "Error: Generic: environment v
ariable not found", span: Some(1085..1092), stack_trace: Some(DehydratedStackTrace { 
stack_trace: [] }) } }
The command '/bin/sh -c ls target/** && target/debug/steel cogs/install.scm' returned
 a non-zero code: 1

Did i miss setting any ENV ?

[mattwparas]

Maybe try setting STEEL_HOME with the ENV line? Like so:

ENV STEEL_HOME="/lib/steel"

[kskarthik]

Well, It didn't help as well, Here's my Dockerfile

# FROM rust:alpine as build
FROM rust:slim as build

COPY . /steel/

WORKDIR /steel

RUN apt update && \
        apt install -y \
        build-essential \
        libssl-dev \
        openssl \
        pkg-config

# RUN apk update && \
#       apk add openssl-dev \
#       openssl \
#       pkgconfig \
#       alpine-sdk

RUN mkdir -p /lib/steel/

ENV STEEL_HOME="/lib/steel"

RUN cargo build

RUN cargo run -- cogs/install.scm

[mattwparas]

I managed to build it using that Dockerfile - here is the output:

➜  steel git:(mwp-improper-lists) ✗ docker build .     
[+] Building 63.8s (12/12) FINISHED                                               docker:default
 => [internal] load build definition from Dockerfile                                        0.0s
 => => transferring dockerfile: 424B                                                        0.0s
 => [internal] load .dockerignore                                                           0.0s
 => => transferring context: 48B                                                            0.0s
 => [internal] load metadata for docker.io/library/rust:slim                                0.3s
 => [internal] load build context                                                           1.2s
 => => transferring context: 204.43MB                                                       1.1s
 => CACHED [1/7] FROM docker.io/library/rust:slim@sha256:8f7df8eb8f5fc25284cb83a0ba6088a09  0.0s
 => [2/7] COPY . /steel/                                                                    1.0s
 => [3/7] WORKDIR /steel                                                                    0.0s
 => [4/7] RUN apt update &&   apt install -y   build-essential   libssl-dev   openssl   pk  8.2s
 => [5/7] RUN mkdir -p /lib/steel/                                                          0.4s
 => [6/7] RUN cargo build                                                                  44.9s 
 => [7/7] RUN cargo run -- cogs/install.scm                                                 1.5s 
 => exporting to image                                                                      6.4s 
 => => exporting layers                                                                     6.4s 
 => => writing image sha256:f39dcc7ff32f2326b46900d1d38a798fe3197591d23bb52931d8b44619bf6d  0.0s 

I also added a .dockerignore with the following contents:

target/

[kskarthik]

yeah, strange! it's working now

BTW STEEL_HOME is only required during build, right ?

[mattwparas]

It's used to resolve installed modules, so it's not used during any execution, but it's used when compiling steel code to bytecode. So if you want to use globally installed modules then you'll need it

[kskarthik]

Finally! done