ci, wip: fix cargo cache, env expansion

.woodpecker.yml

@@ -33,9 +33,8 @@ pipeline:
     group: init
     image: albedo.lan:5000/upend-rust:latest
     pull: true
-    environment:
-      CARGO_HOME: ${CI_WORKSPACE}/.cargo
     commands:
+      - export CARGO_HOME=$CI_WORKSPACE/.cargo
       - test -d $CARGO_HOME || cp -vr /usr/local/cargo $CARGO_HOME
 
   cache:pushtest:
@@ -63,9 +62,8 @@ pipeline:
   prepare:build:wasmlib:
     image: albedo.lan:5000/upend-rust:latest
     pull: true
-    environment:
-      CARGO_HOME: ${CI_WORKSPACE}/.cargo
     commands:
+      - export CARGO_HOME=$CI_WORKSPACE/.cargo
       - rustc --version && cargo --version
       - task build:wasmlib
     # volumes:
@@ -75,9 +73,8 @@ pipeline:
     group: build
     image: albedo.lan:5000/upend-rust:latest
     pull: true
-    environment:
-      CARGO_HOME: ${CI_WORKSPACE}/.cargo
     commands:
+      - export CARGO_HOME=$CI_WORKSPACE/.cargo
       - rustc --version && cargo --version
       - task build:backend
     # volumes:
@@ -95,9 +92,8 @@ pipeline:
     group: lint
     image: albedo.lan:5000/upend-rust:latest
     pull: true
-    environment:
-      CARGO_HOME: ${CI_WORKSPACE}/.cargo
     commands:
+      - export CARGO_HOME=$CI_WORKSPACE/.cargo
       - rustup component add clippy
       - task lint:backend
       - git status -vvv
@@ -150,9 +146,8 @@ pipeline:
     group: test
     image: albedo.lan:5000/upend-rust:latest
     pull: true
-    environment:
-      CARGO_HOME: ${CI_WORKSPACE}/.cargo
     commands:
+      - export CARGO_HOME=$CI_WORKSPACE/.cargo
       - task test:backend
     # volumes:
     #   - rust_registry:/usr/local/cargo