update lists and install xdebug

5.6/Dockerfile

@@ -11,7 +11,8 @@ COPY --from=composer:latest /usr/bin/composer /usr/bin/composer
 # are using an older version.
 RUN apt-get update && \
     apt-get install -y autoconf dpkg dpkg-dev file g++ gcc make pkgconf re2c && \
-    pecl install xdebug-2.5.5 && \
+    pecl channel-update pecl.php.net && \
+    pecl install xdebug && \
     rm -rf /var/lib/apt/lists/*
     # TODO: Remove packages again, currently apt will bail out with:
     # "WARNING: The following essential packages will be removed.

7.0/Dockerfile

@@ -9,6 +9,7 @@ COPY --from=composer:latest /usr/bin/composer /usr/bin/composer
 # Install xdebug
 RUN apt-get update && \
     apt-get install -y autoconf dpkg dpkg-dev file g++ gcc make pkgconf re2c && \
+    pecl channel-update pecl.php.net && \
     pecl install xdebug && \
     rm -rf /var/lib/apt/lists/*
     # TODO: Remove packages again, currently apt will bail out with:

7.1/Dockerfile

@@ -9,6 +9,7 @@ COPY --from=composer:latest /usr/bin/composer /usr/bin/composer
 # Install xdebug
 RUN apt-get update && \
     apt-get install -y autoconf dpkg dpkg-dev file g++ gcc make pkgconf re2c && \
+    pecl channel-update pecl.php.net && \
     pecl install xdebug && \
     rm -rf /var/lib/apt/lists/*
     # TODO: Remove packages again, currently apt will bail out with:

7.2/Dockerfile

@@ -9,6 +9,7 @@ COPY --from=composer:latest /usr/bin/composer /usr/bin/composer
 # Install xdebug
 RUN apt-get update && \
     apt-get install -y autoconf dpkg dpkg-dev file g++ gcc make pkgconf re2c && \
+    pecl channel-update pecl.php.net && \
     pecl install xdebug && \
     rm -rf /var/lib/apt/lists/*
     # TODO: Remove packages again, currently apt will bail out with: