Merge pull request #116 from michaelPf85/latest-php-version

Dynamically get latest PHP version

Author: StefanScherer

php/Dockerfile

@@ -2,9 +2,6 @@ FROM microsoft/iis:windowsservercore
 
 SHELL ["powershell", "-Command", "$ErrorActionPreference = 'Stop'; $ProgressPreference = 'SilentlyContinue';"]
 
-ENV PHP_VERSION 7.1.3
-ENV PHP_SHA1 4000132114cecdec82c83b09aed6a962ed928e0b
-
 WORKDIR /Users/ContainerAdministrator/Downloads
 
 # Visual C++ 2015 Redistributable
@@ -13,8 +10,16 @@ RUN Invoke-WebRequest 'https://download.microsoft.com/download/9/3/F/93FCF1E7-E6
     Remove-Item vc_redist.x64.exe;
 
 # Install PHP
-RUN Invoke-WebRequest $('http://windows.php.net/downloads/releases/php-{0}-nts-Win32-VC14-x64.zip' -f $env:PHP_VERSION) -OutFile 'php.zip'; \
-    if ((Get-FileHash php.zip -Algorithm sha1).Hash -ne $env:PHP_SHA1) {exit 1} ; \
+RUN $download_page = Invoke-WebRequest -UseBasicParsing -Uri 'http://windows.php.net/download'; \
+    $re      = 'php-\d.+-nts.+x64\.zip$'; \
+    $url     = $download_page.links | ? href -match $re  | % href | select -First 1; \
+    $filename = $url.Substring(20); \
+    $checksums = Invoke-WebRequest -UseBasicParsing -Uri 'http://windows.php.net/downloads/releases/sha1sum.txt'; \
+    $sumpattern = '([0-9A-F]+)\s+'+$filename; \
+    $checksums.Content.Split(\"`n\") | Select-String -Pattern $sumpattern | %{ $sum = $_.Matches[0].Groups[1].Value.ToUpper() }; \
+    $fullurl = 'http://windows.php.net' + $url; \
+    Invoke-WebRequest -UseBasicParsing -Uri $fullurl -OutFile php.zip; \
+    if ((Get-FileHash php.zip -Algorithm sha1).Hash -ne $sum) {exit 1} ; \
     Expand-Archive -Path php.zip -DestinationPath c:\php; \
     [Environment]::SetEnvironmentVariable('PATH', $env:Path + ';C:\php', [EnvironmentVariableTarget]::Machine); \
     $env:PATH = [Environment]::GetEnvironmentVariable('PATH', [EnvironmentVariableTarget]::Machine); \
@@ -36,7 +41,7 @@ RUN .\configure_iis.ps1; \
     Remove-Item configure_iis.ps1;
 
 # Expose the Site
-RUN New-WebSite -Name "www" -PhysicalPath C:\www -Port 80
+RUN New-WebSite -Name 'www' -PhysicalPath C:\www -Port 80
 
 # Change working directory to web root
 WORKDIR /www