Update pecl channel

php-unit-test/5.6/Dockerfile

@@ -13,6 +13,7 @@ LABEL org.label-schema.build-date=$BUILD_DATE \
       maintainer="Alan Nelson <alan.nelson@nebraska.edu>"
 
 RUN apk add --no-cache bash nodejs nodejs-npm $PHPIZE_DEPS \
+    && pecl channel-update pecl.php.net \
     && pecl install xdebug-2.5.0 \
     && docker-php-ext-enable xdebug \
     && apk del --no-cache $PHPIZE_DEPS

php-unit-test/7.0/Dockerfile

@@ -13,6 +13,7 @@ LABEL org.label-schema.build-date=$BUILD_DATE \
       maintainer="Alan Nelson <alan.nelson@nebraska.edu>"
 
 RUN apk add --no-cache bash nodejs nodejs-npm $PHPIZE_DEPS \
+    && pecl channel-update pecl.php.net \
     && pecl install xdebug-2.9.0 \
     && docker-php-ext-enable xdebug \
     && apk del --no-cache $PHPIZE_DEPS

php-unit-test/7.1/Dockerfile

@@ -13,6 +13,7 @@ LABEL org.label-schema.build-date=$BUILD_DATE \
       maintainer="Alan Nelson <alan.nelson@nebraska.edu>"
 
 RUN apk add --no-cache bash nodejs nodejs-npm libmcrypt-dev $PHPIZE_DEPS \
+    && pecl channel-update pecl.php.net \
     && pecl install xdebug redis \
     && docker-php-ext-enable xdebug redis \
     && docker-php-ext-install mcrypt \

php-unit-test/7.2/Dockerfile

@@ -13,6 +13,7 @@ LABEL org.label-schema.build-date=$BUILD_DATE \
       maintainer="Alan Nelson <alan.nelson@nebraska.edu>"
 
 RUN apk add --no-cache bash nodejs nodejs-npm $PHPIZE_DEPS \
+    && pecl channel-update pecl.php.net \
     && pecl install xdebug redis \
     && docker-php-ext-enable xdebug redis \
     && apk del --no-cache $PHPIZE_DEPS

php-unit-test/7.3/Dockerfile

@@ -13,6 +13,7 @@ LABEL org.label-schema.build-date=$BUILD_DATE \
       maintainer="Alan Nelson <alan.nelson@nebraska.edu>"
 
 RUN apk add --no-cache bash nodejs nodejs-npm $PHPIZE_DEPS \
+    && pecl channel-update pecl.php.net \
     && pecl install xdebug redis \
     && docker-php-ext-enable xdebug redis \
     && apk del --no-cache $PHPIZE_DEPS