ci: use images from gstreamer-rs

Also:
- use the same patterns as gstreamer-rs and gst-plugins-rs ci.
- remove unused cross build template
- update from Rust 1.36 to 1.40

.gitlab-ci.yml

@@ -1,52 +1,45 @@
+include:
+  - remote: "https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/-/raw/master/ci/images_template.yml"
+
 stages:
   - "lint"
   - "test"
 
-.cargo_cache: &cache
+.base:
+  image: "registry.freedesktop.org/gstreamer/gstreamer-rs/debian/10:$RUST_VERSION-$GST_RS_IMG_TAG"
+  variables:
+    # Only stuff inside the repo directory can be cached
+    # Override the CARGO_HOME variable to force its location
+    CARGO_HOME: "${CI_PROJECT_DIR}/.cargo_home"
+    G_DEBUG: "fatal_warnings"
+  before_script:
+    - source ./ci/env.sh
+    - mkdir .cargo && echo -e "[net]\ngit-fetch-with-cli = true" > .cargo/config
   cache:
     key: "gst"
     paths:
-      - ".cargo_cache/"
+      - "${CARGO_HOME}"
 
-.cargo_test_template: &cargo_test
-  stage: "test"
+.img-stable:
+  extends: .base
   variables:
-    G_DEBUG: "fatal_warnings"
-    DEPENDENCIES: |
-      curl
-      liborc-0.4-dev
-      libglib2.0-dev
-      libxml2-dev
-      libegl1-mesa
-      libgles2-mesa
-      libgl1-mesa-dri
-      libgl1-mesa-glx
-      libwayland-egl1-mesa
-      xz-utils
+    RUST_VERSION: "stable"
 
-  <<: *cache
-  before_script:
-    - apt-get update -yqq
-    - apt-get install -yqq --no-install-recommends $DEPENDENCIES
+.img-1-40:
+  extends: .base
+  variables:
+    RUST_VERSION: "1.40.0"
 
-    # Only stuff inside the repo directory can be cached
-    # Override the CARGO_HOME variable to force its location
-    - export CARGO_HOME="${PWD}/.cargo_cache"
-
-    - mkdir -p precompiled-gst && cd precompiled-gst
-
-    - curl -L https://people.freedesktop.org/~slomo/gstreamer-1.16.1.tar.xz | tar xJ
-    - sed -i "s;prefix=/root/gstreamer;prefix=$PWD/gstreamer;g" $PWD/gstreamer/lib/x86_64-linux-gnu/pkgconfig/*.pc
-    - export PKG_CONFIG_PATH=$PWD/gstreamer/lib/x86_64-linux-gnu/pkgconfig
-    - export GST_PLUGIN_SYSTEM_PATH=$PWD/gstreamer/lib/x86_64-linux-gnu/gstreamer-1.0
-    - export PATH=$PATH:$PWD/gstreamer/bin
-
-    # go back to the root build directory
-    - cd ..
+.img-nightly:
+  extends: .base
+  variables:
+    RUST_VERSION: "nightly"
 
+.cargo test:
+  stage: "test"
+  script:
     - rustc --version
     - cargo --version
-  script:
     - cargo build --all --color=always
     # FIXME: tests are broken
     # https://github.com/sdroege/gstreamer-sys/issues/16
@@ -78,47 +71,24 @@ stages:
                 cargo test -p $crate; \
             done
 
-test 1.36:
-  # 1.36 img
-  # https://hub.docker.com/_/rust/
-  image: "rust:1.36-slim-buster"
-  <<: *cargo_test
-
 test stable:
-  # Stable img
-  # https://hub.docker.com/_/rust/
-  image: "rust:slim-buster"
-  <<: *cargo_test
+  extends:
+    - '.cargo test'
+    - .img-stable
+
+test 1.40:
+  extends:
+    - '.cargo test'
+    - .img-1-40
 
 test nightly:
-  # Nightly
-  # https://hub.docker.com/r/rustlang/rust/
-  image: "rustlang/rust:nightly-buster-slim"
-  allow_failure: true
-  <<: *cargo_test
-
-.cargo_cross_check_template: &cargo_cross_check
-  # Stable img
-  # https://hub.docker.com/_/rust/
-  image: "rust:slim-buster"
-  stage: "test"
-  variables:
-    PKG_CONFIG: "true"
-    PKG_CONFIG_ALLOW_CROSS: "1"
-
-  before_script:
-    - rustup target add $CROSS_TARGET_TRIPLET
-    - rustc --version
-    - cargo --version
-
-  script:
-    - cargo check --target $CROSS_TARGET_TRIPLET --all --color=always
-    - cargo check --target $CROSS_TARGET_TRIPLET --all --all-features --color=always
+  extends:
+    - '.cargo test'
+    - .img-nightly
 
 rustfmt:
-  image: "rust:slim-buster"
+  extends: .img-stable
   stage: "lint"
   script:
-    - rustup component add rustfmt
     - cargo fmt --version
     - cargo fmt -- --color=always --check

ci/env.sh

@@ -0,0 +1,8 @@
+export RUSTUP_HOME='/usr/local/rustup'
+export PATH=$PATH:/usr/local/cargo/bin
+
+export PKG_CONFIG_PATH=/usr/local/lib/x86_64-linux-gnu/pkgconfig
+export GST_PLUGIN_SYSTEM_PATH=/usr/local/lib/x86_64-linux-gnu/gstreamer-1.0
+export GST_PLUGIN_SCANNER=/usr/local/libexec/gstreamer-1.0/gst-plugin-scanner
+export PATH=$PATH:/usr/local/bin
+export LD_LIBRARY_PATH=/usr/local/lib/x86_64-linux-gnu:$LD_LIBRARY_PATH