fix imagick on alpine

[lifeofguenter]

Currently alpine images have a broken imagick extension. The extension does not rely only on imagick libraries but a bunch of other libraries (libjpeg, libpng, etc.).

See:

• Unable to install imagick php#105 (comment)
• NoDecodeDelegateForThisImageFormat `JPEG' @ error/constitute.c/ReadImage/50 thephpleague/glide#237

Unless this was done on purpose to keep the base image size small? I would then either leave imagick out completely or add better documentation to this behaviour.

[tianon]

Currently alpine images have a broken imagick extension.

Can you please elaborate on this? (maybe a simple reproducer?)

The Debian images don't include the ImageMagick command-line utilities either, so if the Alpine images are broken, the Debian images should be too.

From what I can tell, the imagick PECL extension (appropriately) uses the ImageMagick libraries directly, and doesn't seem to shell out to convert and friends?

[lifeofguenter]

@tianon

 docker run -it --rm --entrypoint php wordpress:5.4-php7.4-fpm-alpine -r 'print_r(Imagick::queryFormats());'
Array
(
)

vs.

 docker run -it --rm --entrypoint php wordpress:5.4-php7.4-fpm -r 'print_r(Imagick::queryFormats());'
Array
(
    [0] => 3FR
    [1] => 3G2
    [2] => 3GP
    [3] => AAI
    [4] => AI
    [5] => ART
    [6] => ARW
    [7] => AVI
    [8] => AVS
    [9] => BGR
    [10] => BGRA
    [11] => BGRO
    [12] => BIE
    [13] => BMP
    [14] => BMP2
    [15] => BMP3
    [16] => BRF
    [17] => CAL
    [18] => CALS
    [19] => CANVAS
    [20] => CAPTION
    [21] => CIN
    [22] => CIP
    [23] => CLIP
    [24] => CMYK
    [25] => CMYKA
    [26] => CR2
    [27] => CRW
    [28] => CUR
    [29] => CUT
    [30] => DATA
    [31] => DCM
    [32] => DCR
    [33] => DCX
    [34] => DDS
    [35] => DFONT
    [36] => DNG
    [37] => DPX
    [38] => DXT1
    [39] => DXT5
    [40] => EPDF
    [41] => EPI
    [42] => EPS
    [43] => EPS2
    [44] => EPS3
    [45] => EPSF
    [46] => EPSI
    [47] => EPT
    [48] => EPT2
    [49] => EPT3
    [50] => ERF
    [51] => FAX
    [52] => FILE
    [53] => FITS
    [54] => FRACTAL
    [55] => FTP
    [56] => FTS
    [57] => G3
    [58] => G4
    [59] => GIF
    [60] => GIF87
    [61] => GRADIENT
    [62] => GRAY
    [63] => GRAYA
    [64] => GROUP4
    [65] => H
    [66] => HALD
    [67] => HDR
    [68] => HEIC
    [69] => HISTOGRAM
    [70] => HRZ
    [71] => HTM
    [72] => HTML
    [73] => HTTP
    [74] => HTTPS
    [75] => ICB
    [76] => ICO
    [77] => ICON
    [78] => IIQ
    [79] => INFO
    [80] => INLINE
    [81] => IPL
    [82] => ISOBRL
    [83] => ISOBRL6
    [84] => J2C
    [85] => J2K
    [86] => JBG
    [87] => JBIG
    [88] => JNG
    [89] => JNX
    [90] => JP2
    [91] => JPC
    [92] => JPE
    [93] => JPEG
    [94] => JPG
    [95] => JPM
    [96] => JPS
    [97] => JPT
    [98] => JSON
    [99] => K25
    [100] => KDC
    [101] => LABEL
    [102] => M2V
    [103] => M4V
    [104] => MAC
    [105] => MAGICK
    [106] => MAP
    [107] => MASK
    [108] => MAT
    [109] => MATTE
    [110] => MEF
    [111] => MIFF
    [112] => MKV
    [113] => MNG
    [114] => MONO
    [115] => MOV
    [116] => MP4
    [117] => MPC
    [118] => MPEG
    [119] => MPG
    [120] => MRW
    [121] => MSL
    [122] => MTV
    [123] => MVG
    [124] => NEF
    [125] => NRW
    [126] => NULL
    [127] => ORF
    [128] => OTB
    [129] => OTF
    [130] => PAL
    [131] => PALM
    [132] => PAM
    [133] => PATTERN
    [134] => PBM
    [135] => PCD
    [136] => PCDS
    [137] => PCL
    [138] => PCT
    [139] => PCX
    [140] => PDB
    [141] => PDF
    [142] => PDFA
    [143] => PEF
    [144] => PES
    [145] => PFA
    [146] => PFB
    [147] => PFM
    [148] => PGM
    [149] => PGX
    [150] => PICON
    [151] => PICT
    [152] => PIX
    [153] => PJPEG
    [154] => PLASMA
    [155] => PNG
    [156] => PNG00
    [157] => PNG24
    [158] => PNG32
    [159] => PNG48
    [160] => PNG64
    [161] => PNG8
    [162] => PNM
    [163] => PPM
    [164] => PREVIEW
    [165] => PS
    [166] => PS2
    [167] => PS3
    [168] => PSB
    [169] => PSD
    [170] => PTIF
    [171] => PWP
    [172] => RADIAL-GRADIENT
    [173] => RAF
    [174] => RAS
    [175] => RAW
    [176] => RGB
    [177] => RGBA
    [178] => RGBO
    [179] => RGF
    [180] => RLA
    [181] => RLE
    [182] => RMF
    [183] => RW2
    [184] => SCR
    [185] => SCT
    [186] => SFW
    [187] => SGI
    [188] => SHTML
    [189] => SIX
    [190] => SIXEL
    [191] => SPARSE-COLOR
    [192] => SR2
    [193] => SRF
    [194] => STEGANO
    [195] => SUN
    [196] => TEXT
    [197] => TGA
    [198] => THUMBNAIL
    [199] => TIFF
    [200] => TIFF64
    [201] => TILE
    [202] => TIM
    [203] => TTC
    [204] => TTF
    [205] => TXT
    [206] => UBRL
    [207] => UBRL6
    [208] => UIL
    [209] => UYVY
    [210] => VDA
    [211] => VICAR
    [212] => VID
    [213] => VIFF
    [214] => VIPS
    [215] => VST
    [216] => WBMP
    [217] => WEBP
    [218] => WMV
    [219] => WPG
    [220] => X
    [221] => X3F
    [222] => XBM
    [223] => XC
    [224] => XCF
    [225] => XPM
    [226] => XPS
    [227] => XV
    [228] => XWD
    [229] => YCbCr
    [230] => YCbCrA
    [231] => YUV
)

• alpine behaves differently than non-alpine docker image, which in it alone is a regression/bug
• imagemagick php extension alone does not really do much if it does not support a single input - and in that case it should rather not be installed in first place as it would give a wrong impression, as the normal use case would be to install imagemagick with more than 1 supported inputs
• imagemagick php extension does not require "shelling out", but it still requires other libraries to function. By installing the imagemagick package, we ensure that all those libraries are included

[yosifkit]

I see; it looks like the confusion comes from the Debian "imagemagick" package only containing the binaries like convert while the Alpine package for "imagemagick" contains those same binaries as well as many, many .so files 😞.

[yosifkit]

Nice! LGTM

[tianon]

Thanks 👍