Migrate Travis CI scripts to Fooman mirrors (#54)

* Use Fooman-mirror for Travis installation to avoid requiring credentials (see https://fooman.com/blog/no-authentication-needed-magento-2-mirror.html and #51)

* Use --add-repository CLI flag to stick to fooman mirror

* Stick to https://repo-magento-mirror.fooman.co.nz/ mirror on installation

* Downgrade to composer v1 in Travis job matrix

* Downgrade to composer v1 in Travis job matrix

* Install dev-dependencies in 2nd step

* Work around memory limit

* Set composer version in environment variable

* Use latest versions of 2.3.3, 2.3.4, and 2.3.5

* Remove pre-2.3.6 Magento versions from Travis CI matrix

.travis.yml

@@ -1,19 +1,33 @@
 language: php
-php:
-  - 7.4
-  - 7.3
+
 env:
-  - M2_VERSION=2.4.2
-  - M2_VERSION=2.4.1
-  - M2_VERSION=2.4.0
+  global:
+    - COMPOSER_MEMORY_LIMIT=-1
+    - COMPOSER_CHANNEL=stable
+
 jobs:
   include:
+    - php: 7.4
+      env: M2_VERSION=2.4.2
+    - php: 7.4
+      env: M2_VERSION=2.4.1-p1 COMPOSER_CHANNEL=1
+    - php: 7.4
+      env: M2_VERSION=2.4.0-p1 COMPOSER_CHANNEL=1
     - php: 7.3
-      env: M2_VERSION=2.3.6-p1
+      env: M2_VERSION=2.4.2
     - php: 7.3
-      env: M2_VERSION=2.3.5
+      env: M2_VERSION=2.4.1-p1 COMPOSER_CHANNEL=1
+    - php: 7.3
+      env: M2_VERSION=2.4.0-p1 COMPOSER_CHANNEL=1
+    - php: 7.3
+      env: M2_VERSION=2.3.6-p1 COMPOSER_CHANNEL=1
+
+before_install:
+  - composer --verbose self-update --$COMPOSER_CHANNEL
+
 cache:
   directories:
     - $HOME/.composer/cache
+
 script:
   - dev/ci/build.sh

dev/ci/build.sh

@@ -18,9 +18,7 @@ fi
 for envkey in \
   MODULE_NAME \
   MODULE_SRC_DIR \
-  M2_VERSION \
-  M2_REPO_USERNAME \
-  M2_REPO_PASSWORD
+  M2_VERSION
 do
   if [ -z "$(eval echo \$$envkey)" ]
   then
@@ -40,20 +38,23 @@ then
   MODULE_DST_DIR="$BUILD_DIR/app/code/$(echo $MODULE_NAME | sed 's/_/\//')"
 fi
 
-# Set composer authentication params
-"$COMPOSER_BIN" config --global \
-  "http-basic.repo.magento.com" "$M2_REPO_USERNAME" "$M2_REPO_PASSWORD"
-
 set -x
 
 # Fetch Magento 2 source
 "$COMPOSER_BIN" create-project \
+  --repository=https://repo-magento-mirror.fooman.co.nz/ \
+  --add-repository \
   --quiet \
   --ignore-platform-reqs \
-  --repository-url=https://repo.magento.com/ \
+  --no-install \
   magento/project-community-edition \
   "$BUILD_DIR" "$M2_VERSION"
 
+cd "$BUILD_DIR"
+"$COMPOSER_BIN" config --unset repo.0
+"$COMPOSER_BIN" config repositories.foomanmirror composer https://repo-magento-mirror.fooman.co.nz/
+"$COMPOSER_BIN" update
+
 # Copy module into Magento
 mkdir -p "$(dirname "$MODULE_DST_DIR")"
 cp -r "$MODULE_SRC_DIR" "$MODULE_DST_DIR"